BFC
BFC
Bimeccanica offers a diverse range of innovative and standardized products, including trapezoidal screws that adhere to ISO and DIN standards. Their offerings include semi-finished products "BFC" and assembled finished products "GDM & SLV," all readily available from stock. The company has introduced "GDM standard" maneuvering groups to improve system design and manufacturing, ensuring easy adjustment of axial play and safety in moving vertical loads. The "SLV" stabilizers standardize a previously custom-made mechanical system. Bimeccanica emphasizes product interchangeability and spare parts continuity, continually expanding their product range.
Founded in 1976, Bimeccanica began producing trapezoidal screws and components. The company was rebranded in 1999 and expanded its facilities in 2001, covering approximately 2,000 m2. Their success is attributed to innovation, product standardization, and responsiveness to market technological requirements.
The company is located in Castelfiorentino, Firenze, Italy, with directions provided for access from major motorways and airports.
Bimeccanica has standardized a new range of products, transforming semi-finished products into finished articles. Their product range includes trapezoidal screw movement products, assembled products like SCREW DRIVE TRANSMISSION GROUPS, and leveling stabilizers for machinery and industry.
The BFC Technical Catalogue includes threaded bars, lead nuts, and accessories for linear movement and positioning using trapezoidal screws. It details various materials and types of threaded bars, including steel, stainless steel, and aluminum alloy, along with accessories like stop rings and locking rings.
Bimeccanica has expanded its product range with innovative items related to screw drive transmissions, including trapezoidal threaded bars in various materials and models, long bronze flanged nuts, and various accessories. They also offer Screw Drive Transmission Groups and trapezoidal screw leveling stabilizers, addressing market needs for heavy pressing and leveling.
Bimeccanica's growth is driven by product quality and a diverse range that meets client needs. They maintain a stocked warehouse of standard products and offer custom manufacturing options. Technical catalogues and a sales catalogue summarizing all products are available on their website.
The document references several catalogues: a general sales catalogue, and technical catalogues for threaded trapezoidal bars, screw drive transmission groups, and leveling stabilizers.
The catalogue provides detailed specifications for various threaded bars and nuts, including dimensions and ranges (e.g., TR10 to TR80). It emphasizes the importance of using the correct materials and treatments, such as nitriding treatment in R80 or R100 steel, for optimal performance.
Key factors affecting performance include speed, load, type of movement, and lubrication. The document outlines maximum parameters to avoid critical working situations, such as a maximum sliding contact speed of 25 meters per minute and a maximum pressure on the thread profile.
Bimeccanica has developed new patented products to enhance performance, including supports and sleeves for coupling lead nuts, safety systems to prevent load falls, and anti-dust cups to maintain lubrication.
The company is establishing a quality control room to support theoretical data with in-house tests, ensuring the accuracy of pitch tolerances and the quality classification of threaded bars.
The document provides methods for calculating movement speed, load, and torque, with examples for vertical and horizontal applications. It emphasizes the inverse proportionality between speed and load/torque.
A comprehensive table lists technical data for sizing trapezoidal screws and nuts, including speed, load, torque, and efficiency values for various screw sizes.
For vertical lifting, it is recommended to use threaded bars constrained at both ends, with specific materials and safety measures to prevent loosening and ensure stability.
The document provides detailed specifications for selecting and using trapezoidal profiled screws and nuts. It includes guidelines for increasing horizontal load values by up to 400% without affecting other factors. For heavy loads, the use of a drive with an inverter is recommended.
The trapezoidal thread section is the reference geometry, with nominal measurements provided. The document outlines the compression resistance of the trapezoidal screw based on the type of constraint used, with specific coefficients for different applications.
A graph illustrates the relationship between allowable pressure and sliding velocity for different materials and lubrication conditions. Key formulas are provided for calculating sliding velocity, maximum revolutions, and dynamic load.
Correct and incorrect assembly methods are discussed, emphasizing the importance of proper mounting to support maximum dynamic and static loads. The use of safety flanges and dust cups is recommended for optimal performance.
The document lists various types of threaded bars and nuts, including steel, stainless steel, and aluminum alloy options. It provides a suitability rating for different load and speed conditions, highlighting the importance of lubrication and proper assembly.
For applications requiring high speeds or loads, technical tests are advised to evaluate performance and prevent overheating and wear. The document also suggests using specific lubricants and conducting technical assessments for applications with extreme forces.
The document outlines the production of "STANDARD" threaded bars in compliance with ISO 2901-2904 and DIN 103 standards. The bars are available in diameters and pitches such as TR10x3, TR14x4, TR25x5, TR35x6, and TR45x8. They are manufactured with a tolerance quality of 7e and accompanying nuts with tolerances of 7H. The thread geometry is 30° with a pitch quality of class 100.
The threaded bars are made from certified materials including steel (R50, R80, R100 NiCr), stainless steel (AISI 303, 304, 316), and aluminum alloy (6026). These materials facilitate machining and eliminate additional rectifying costs.
1. Fully Threaded Bars (IF Series): Versatile and customizable, available in standard lengths.
2. Threaded Bars with Cylindrical Shank (FC Series): Partially threaded with a cylindrical shank for better fitting to supports.
3. Bi-Directional Bars (BID Series): Feature opposing right/left threads for bi-directional movements.
Includes stop rings (ABA/ABI), threaded sleeve nuts (MFA/MFI), locking rings (GBA/GBI), and auto-locking rings (GHA/N, GHA/P). These accessories enhance the functionality and stability of the threaded bars.
The document details the uses of trapezoidal threaded bars and the characteristics of various materials. For example, R50 steel is suitable for low to medium load transmissions, while R100 steel is ideal for heavy load applications. Stainless steels like AISI 303, 304, and 316 are recommended for environments requiring resistance to atmospheric and chemical agents.
The document provides detailed specifications and ordering information for trapezoidal threaded bars used in mechanical transmissions. It includes both standard and custom options, with a focus on right and left threaded bars.
The document lists various sizes of threaded bars, identified by codes such as MI and MH, with dimensions ranging from TR 10x2x to TR 100x12x. Each size has specific codes for different lengths and configurations, including entirely threaded and those with cylindrical shanks.
The bars are primarily made from steel types R80 and R100, suitable for medium to heavy load mechanical transmissions. An alternative material, 42CrMo4 steel, may be used due to availability.
To order left-threaded bars, specify 'Sx' at the end of the article and 'L' at the end of the code. If not specified, right-threaded bars are assumed. Custom lengths and configurations are available on request.
The bars conform to ISO 2901/2/3/4 and DIN 103 standards, ensuring compatibility and quality in mechanical applications.
Some articles marked with an asterisk are less commonly used, and availability should be confirmed with the supplier. The document also suggests using 'Castolin EC 4080' electrodes for welding accessories to the bars.
Standard lengths may slightly vary due to raw material constraints, with a maximum deviation of 0.5%. Custom requests for different pitches, lengths, and treatments like nitriding are accommodated.
The document details the specifications for stainless steel 316 trapezoidal threaded bars, specifically designed for marine and chemical/corrosive sectors. These bars are available in standard lengths with right and left threads in a single piece, conforming to ISO 2901/2/3/4 and DIN 103 norms. The standard lengths are 1500 mm and 3000 mm, with additional lengths available on request.
The document provides comprehensive technical data for various sizes of threaded bars, including external diameter, core diameter, average diameter, and weight per meter for both thread and shank. The document also includes codes for ordering specific sizes.
The document advises on the availability of less commonly used articles and suggests checking with the office for availability. It also mentions the provision of "Castolin 33500" electrodes for welding accessories to the threaded bars. The standard lengths may be slightly reduced due to raw material constraints, with a maximum reduction of 0.5%.
On request, the company can provide bi-directional threaded bars with different lengths, pitches, and anodizing treatments. The document also mentions the availability of bars with longer central shanks requiring anti-flexing support.
The document lists accessories for trapezoidal screws, including steel and stainless steel stop rings with grub screws for fixing. These accessories are designed to provide solid stops on all types of bars, especially fully threaded ones.
The document notes the availability of a stock of threaded bars for cutting to custom lengths upon request, highlighting the flexibility in meeting specific client needs.
The document provides detailed specifications for various threaded bars and clamping rings used in mechanical applications. It includes dimensions, weights, and wrench sizes for different models, such as M10x0.75 to M60x2 for threaded bars and AM/A and AMS/A clamping rings.
1. GHA Self-Locking Rings: The document outlines solutions for mounting GHA self-locking rings on trapezoidal screws without causing damage. It recommends using hexagonal sockets or clamping rings (AM/A or AMS/A) to secure the screw during installation.
2. Use of Clamping Rings: AM/A and AMS/A clamping rings are suggested for manual movements and as stop elements for limiting mechanism travel.
The document references ISO and DIN standards for the manufacturing of nuts and threaded bars, ensuring compatibility and interchangeability of parts.
The document lists a wide range of nuts and lead nuts made from materials like bronze, steel, and nylon, suitable for various mechanical applications. It highlights the characteristics and uses of these materials, emphasizing their resistance to wear and corrosion.
The tables provide specific codes, dimensions, and weights for different products, such as the GHA self-locking rings and AM/A clamping rings, facilitating the selection of appropriate components for specific threaded bars.
1. Material Characteristics: Bronze is noted for its resistance and smooth operation, making it suitable for high dynamic loads.
2. Installation Advice: The document advises against using grips or locking pliers on trapezoidal screws to prevent damage.
The document serves as a comprehensive guide for selecting and using threaded bars, clamping rings, and nuts in mechanical systems, providing essential specifications, installation procedures, and material characteristics to ensure optimal performance and compatibility.
This document provides detailed specifications and guidelines for various types of flange nuts, including bronze, nylon, and steel variants. It covers their applications, material characteristics, and technical specifications.
- Bronze Flange Nuts: Available in long series, suitable for heavy loads with increased thread contact. Made from Bronze CuSn12, these nuts are ideal for both horizontal and vertical applications.
- Nylon Flange Nuts: Made from black polyacetal POM.C, FDA approved, suitable for quick movements and medium/low loads. They are recommended for use in the food industry and applications requiring lightness.
- Steel Flange Nuts: Made from 11SMnPb37 steel, suitable for slow-speed positioning movements. They require good lubrication due to lower anti-friction properties compared to bronze.
- For horizontal and vertical applications, ensure the flange is correctly positioned to support the load.
- Use specific lubricants in sectors with lubrication difficulties, such as the food industry.
- For nylon nuts, consider using a Safety Flange and Dust Cups for added support and thread cleaning.
- All technical data and diagrams are proprietary to Bimeccanica srl.
- Material specifications comply with relevant industry standards, ensuring suitability for specified applications.
- Bronze nuts have a higher load capacity and are suitable for heavy-duty applications.
- Nylon nuts offer faster speeds but lower load capacity compared to bronze.
- Steel nuts are cost-effective but require good lubrication for optimal performance.
- Without specifying "R" or "L" at the end of the code, the nut is considered to be right-threaded.
- Items marked with an asterisk are less commonly used; availability should be confirmed with the supplier.
The document provides technical specifications and recommendations for the use of flange nuts, particularly focusing on their application in both horizontal and vertical settings. It emphasizes the importance of proper lubrication and the use of additional accessories for optimal performance and protection.
The flange nuts are designed for high load-bearing capacity, especially in static positioning. They are similar to steel cylindrical nuts but offer practical advantages due to their shape. The document lists various sizes and specifications for trapezoidal threaded bars, including dimensions, weight, and thread details.
For vertical applications with medium to heavy loads, the flange should be positioned under the support table or mounted above with a Safety Flange FDS. Lubrication is crucial, and a transversal hole for a grease nipple or tube is recommended. Nitriding treatment can enhance wear resistance if both the nut and screw are treated.
The Safety Flange with Dust Cups and lubricator is recommended for additional support and protection against external agents. Dust Cups can be used for complete protection of the nut and screw from dust and impurities. Manifolds for rubber protective covers are available on request.
It is advised to consult the Technical Catalogue GDM for lubricant recommendations and to ensure compatibility with drive transmission groups. For less commonly used items, availability should be confirmed with the supplier.
The document includes detailed tables listing the dimensions, weight, and specifications of various flange nuts and accessories, highlighting the importance of selecting the appropriate components for specific applications.
The document details the specifications for DDG Junction Spacers model 20/60, designed for use with BP and FDS systems. It includes various models with specific dimensions, screw hole sizes, number of screws, and weights. The spacers are categorized by their compatibility with different BP/FDS models, ranging from BP/FDS 20 to BP/FDS 60.
The document provides specifications for dust cups and felts under the FP series, including dimensions, number of felts, fixing hole sizes, and weights. These components are designed to protect against dust and are compatible with BP models ranging from BP 20 to BP 60.
Made from Bronze CuSn12, these nuts are suitable for medium velocity movements and heavy loads. They offer low friction and good wear resistance, requiring lubrication for optimal performance. The document includes fitting instructions and recommendations for dowel usage.
Constructed from black polyacetal POM.C, these nuts are FDA approved and suitable for high-speed applications with lower load capacities compared to bronze. They are ideal for sectors requiring lightness, such as aviation and food industries.
Made from 11SMnPb37 steel, these nuts are cost-effective and suitable for manual movements with good lubrication. They are less friction-resistant but support loads effectively.
The document emphasizes the importance of lubrication for all nut types to ensure maximum efficiency and performance. It also provides guidance on fitting techniques and the use of dowels for securing nuts in place.
The document discusses various types of square nuts made from different materials such as brass, nylon, and steel. Each material has specific characteristics and applications. Brass nuts are noted for their ease of application and fastening options, while nylon nuts are FDA approved and suitable for high-speed movements. Steel nuts are cost-effective but require good lubrication due to their lack of anti-friction properties.
The document outlines the process of customizing nuts with additional holes for lubrication and fastening. Users can request specific configurations, and Bimeccanica can provide guidance or prepare the nuts if the quantity is sufficient.
Lubrication is emphasized as a critical factor for efficiency, especially for brass and steel nuts. The document recommends consulting the Technical Catalogue GDM for suitable lubricants. Nylon nuts can operate without lubrication but may require specific lubricants in challenging environments like the food industry.
The document includes detailed tables listing the dimensions, weight, and thread specifications for various nut types. It highlights the differences in load and speed capabilities between materials, noting that brass is about 30% inferior to bronze, while nylon offers 20% better speed but 65% less load capacity compared to brass.
Examples of nut applications are provided, including welding techniques for steel nuts to support different load types. The document advises on the use of safety supports for heavy loads and provides examples of fitting configurations.
Users are cautioned to specify the thread direction (right or left) when ordering, as the default is right thread. Items marked with an asterisk are less commonly used, and availability should be confirmed with Bimeccanica.
Payment is typically made against documents, with the buyer responsible for any banking fees unless otherwise agreed. In case of delayed payment, interest will be charged as per Legislative Decree no. 231/2002. Payments cannot be suspended due to disputes, and ownership of products remains with Bimeccanica until full payment is received.
Products are delivered to the first carrier within 30 days of payment receipt, with risk passing to the buyer at this point. Bimeccanica is not liable for delivery delays caused by carriers. If Bimeccanica causes a delay exceeding eight weeks, the buyer may partially cancel the contract or seek compensation. Complaints about defects must be made within specified timeframes.
Bimeccanica offers a warranty for defects occurring within 12 months of delivery, with options to repair or replace defective products. This warranty excludes other liabilities unless there is willful misconduct or gross negligence.
All intellectual property rights remain with Bimeccanica. The buyer is restricted from using or registering similar trademarks or infringing on Bimeccanica's intellectual property.
Bimeccanica may suspend contract obligations due to unforeseeable events beyond its control. If such suspension exceeds six weeks, either party may terminate the contract with notice.
Failure by Bimeccanica to enforce contract terms on one occasion does not waive its rights to enforce them in the future.
The contract is governed by Italian law, with disputes resolved in the Court of Florence, Italy, unless Bimeccanica chooses otherwise.
Data is processed lawfully for economic activities, with rights available under legislative decree N°196/2003.
Product information is based on tests and theoretical data, with no liability for errors in complementary product details. Products require final inspections for safe operation.
Catalog excerpts
Trapezoidal threaded bars Nuts/Lead Nuts Italian original production - Florence www.bimeccanica.com - [email protected]
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Products and quality The vast range of innova ve patented and standardized products from Bimeccanica, with trapezoidal threads conforming to norma ves ISO 2901-2-3-4 and DIN 103, demonstrate the high quality standards of our company and make it leader in the sector of mechanical transmissions by trapezoidal screws as well as mul purpose semi nished products “BFC” and assembled nished products “GDM & SLV” , all readily available from stock. With the addi on of our maneuvering groups “GDM standard” to our product range we have innovated and sped up system design and manufacturing of trapezoidal...
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‐ Coming from the north on the A1 motorway, exit at Firenze Scandicci and take the SGC Fi-Pi-Li towards Pisa/ Livorno. Exit at Empoli Ovest onto the S429 to Casteloren no and the Malacoda industrial area. ‐ Coming from Florence airport take the Bimeccanica Srl - Registered offices and production facility Via I.Newton, 5 - Castelfiorentino, Firenze, Italy SGC Fi-Pi-Li towards Pisa/Livorno. Exit at Empoli Ovest onto the S429 to Casteloren no and the Malacoda industrial area. ‐ Coming from Genoa or Parma on the A12 motorway exit at Pisa aeroporto and take the SGC Fi-Pi-Li towards Firenze. Exit...
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The development and success of a company is not always about the technology used or proposed, but is determined by the projects, the level of quality used in their implementa on and the choices made by the people who form the company itself. These choices, when they are the result of serious collabora on, make the studies carried out over the years become reality with the crea on of a form of "mosaic enterprise" and for this reason, in these catalogues, I would like to take opportunity to thank all those who have helped me over the years to make this possible. A special thanks to Carlo Leoncini,...
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TRADE MARK PRESENTATION AND PRODUCTS Part Registered Trade Mark (for marking products) Standard Registered Trade Mark Standard Registered Trade Mark with name Photos, diagrams and technical data are the exclusive property of Bimeccanica srl, All rights reserved
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FIGURATIVE INDEX TECNICHAL CATALOGUE THREADED BARS - LEAD NUTS - ACCESSORIES for linear movement and positioning using trapezoidal screws. FIGURATIVE INDEX OF THE ENTIRE “BFC” RANGE BFA R50 THREADED BARS IN STEEL (11SMnPb37) THREADED BARS IN STEEL (36SMnPb14) THREADED BARS IN STAINLESS STEEL (18/08) THREADED BARS IN STAINLESS STEEL (18/10) THREADED BARS IN STAINLESS STEEL (18/12) THREADED BARS IN ALUMINIUM ALLOY (6026 T6) WAREHOUSE CUTTING DEPARTMENT STEEL STOP RINGS STAINLESS STEEL STOP RINGS STEEL THREADED SLEEVE NUTS STAINLESS STEEL THREADED SLEEVE NUTS STEEL LOCKING RINGS STAINLESS STEEL...
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INDEX FIRST PART: Company presentation. Product presenta on and warehouse Dimensional photos of BFC products Technical data, theore cal basis for sizing and illustra ons Guides for correct moun ng of screws and ange nuts for ver cal use Indica ve summary of product characteris cs Figura ve and descrip ve index SECOND PART: Trapezoidal profile threaded bars and accessories. Ar cles derivable from trapezoidal threaded bars Material characteris cs of trapezoidal threaded bars Trapezoidal threaded bars in R50 steel Trapezoidal threaded bars in R80 steel Trapezoidal threaded bars in R100 steel Trapezoidal...
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Yesterday, man used the Velocipede to speed up his movements... …..Today, with the same pioneering spirit, Bimeccanica has streamlined construc on design procedure for mechanical movements with trapezoidal screw units, presen ng new patented products guaranteeing excellent per‐ formance, safety and interchangeable applica ons. Our trapezoidal screws, used in conjunc on with our threaded sleeves and nuts, present simple prac cality of use coupled with technological compe veness and standardisa on in an ever more demanding world for innova on With this in mind we have produced new products and...
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PRODUCT WAREHOUSE Receiving/shipping department Trapezoidal threaded screw stock Nuts/lead nuts and component stock Photos, diagrams and technical data are the exclusive property of Bimeccanica srl, All rights reserved.
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PRODUCT WAREHOUSE Partial view of our Standard trapezoidal threaded bars stock Photos, diagrams and technical data are the exclusive property of Bimeccanica srl, All rights reserved
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PRODUCT WAREHOUSE Partial views of our Standard trapezoidal threaded bars stock Partial view of stock of Standard nuts/lead nuts Photos, diagrams and technical data are the exclusive property of Bimeccanica srl, All rights reserved.
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INDEX OF BFC PRODUCTS DIMENSIONS Dimensional photos of “BFC” items by single range from the smallest to largest, using a pen in each photo to indicate size. (pen size Ø10xL.140 mm) (3) Threaded bar + nut - BF + CFB SF range TR10÷TR80. (2) Threaded bar + nut - BF + CFB/H range TR20÷TR80. (12) Threaded bar+ handwheel nut - BF + CVR range TR16÷TR30 Threaded bar + nut - BF + CFB/H SF range TR20÷TR80. Photos, diagrams and technical data are the exclusive property of Bimeccanica srl, All rights reserved
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INDEX OF BFC PRODUCTS DIMENSIONS Dimensional photos of “BFC” items by single range from the smallest to largest, using a pen in each photo to indicate size. (pen size Ø10xL.140 mm) (13) Threaded bar + wheel nut - BF + CVL range TR16÷30. (14) Threaded bar + ring - BF + GH/TR range TR20÷TR60. (15) Threaded bar + ring - BF + GH/TRM range TR20÷TR30. (17) Threaded bar + flange -BF + CFB + FDS range TR20÷TR60. (18) Threaded bar + dust cup - BF + CFB + BP range TR20÷TR60 (19) Stop rings - ABA-ABI range Ø6÷Ø65. (20) Threaded sleeves - MFA-MFI - range M10x0,75 ÷ M60x2. (21) Locking rings GBA-GBI - range...
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TECHNICAL DATA FOR SIZING TRAPEZOIDAL PROFILED SCREWS AND NUTS GENERAL PRODUCT GUIDE with sizing according to specific use. (Suggested values, not “absolute”, to consider with the client’s own assessment of their merits for the specic project being considered.) MOVEMENT SPEED/TRAVERSE SPEED PER MINUTE (scre w turns pe r ste p) = WEIGHT OF LOAD TO BE MOVED/TRAVERSE = 3a) OBBLIQUE OR VERTICAL HANDLING/LIFTING (w ith guided load) 3b) HORIZONTAL HANDLING/MOVEMENT ( w ith guid ed load) MAXIMUM LENGTH OF TRAVEL (STROKE) REQUIRED = Factors assessed in preparing the “basic theore cal table” for dynamic movement during li...
Open the catalog to page 14All Bimeccanica s.r.l. catalogs and technical brochures
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