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Bevel gearboxes

Bevel gearboxes

Product catalog summary

Bevel Gearboxes BG Series Overview
The BG Series by SERVOMECH is a high-performance, safety-compliant gearbox line manufactured in Italy, adhering to UNI EN ISO 9001:2008 standards. These gearboxes are compact, efficient, and operate at speeds up to 3000 rpm with low noise. Their modular design supports various configurations, including up to six output shafts.

Manufacturing Features
The gearboxes feature a cubic housing with mounting holes on six sides, radial lubricant seals, and O-rings for effective sealing. Bevel gears are crafted from high-quality alloy steel, ensuring low noise and high efficiency, with precise assembly for optimal performance.

Materials and Components
The housing and covers are made from grey cast iron, with stainless steel options. Shafts are made from hardened steel, with custom machining options. Bevel gears use alloy steel with GLEASON spiroidal toothing. Bearings include taper roller and ball bearings, with larger options for higher loads.

Bevel Gearbox Selection
Selection is based on application factors such as kinematic scheme, torque, speed, load variability, and environmental conditions. Calculations involve determining nominal power and recalculated reference power using load, operating time, and service life factors.

Thermal Power Limit
Each gearbox has a thermal power limit for continuous operation at 20°C, modified by ambient temperature and duty cycle. Exceeding this limit requires lubricant cooling.

Design Options
Various input and output configurations are available, including solid and hollow shafts with different diameters and keying options, allowing adaptation to specific application requirements.

Specifications

Shaft Configurations: Options include solid shafts with cylindrical keys, hollow shafts with cylindrical holes and keyways, and shafts with hubs, designated by codes like M1, M2, S1, S2, R1, and R2.
Materials: Gearbox housing, shaft hubs, and covers are made from grey cast iron EN-GJL-250. Shafts are made from steel C45E +H +QT, and bevel gears from steel 20 MnCr 5, case-hardened and lapped in pairs.
Bearings: Different configurations are used depending on shaft types, including 6005, 6205, 32006, 32007, 32010, 32012, and 32016.

Technical Features

Sizes and Dimensions: Sizes include BG 86, BG 110, BG 134, BG 166, BG 200, and BG 250, with corresponding housing dimensions and shaft diameters.
Performance: Ratios range from 1:1 to 1:4, with efficiency from 0.90 to 0.93. Nominal performances are detailed for various speeds and torque values, ensuring a minimum service life of 10,000 hours under specified conditions.

Design and Configuration

Input Options: Include solid shafts with standard or large diameters and IEC motor flanges with hollow shafts.
Output Options: Include single or double solid shafts, hollow shafts, and shafts with hubs, with designations indicating type and diameter.
Mounting and Orientation: Guidance is provided for identifying gearbox housing sides for accurate mounting and operation, using a color-coded scheme.

Conclusion
The Bevel Gearboxes BG Series offers versatile configurations and materials for various industrial applications, with detailed specifications ensuring optimal performance and longevity.

Lubrication and Maintenance
Gearboxes are pre-lubricated with grease or oil. Grease-lubricated gearboxes are maintenance-free, while oil-lubricated ones require periodic oil changes. Recommended lubricants and maintenance procedures are specified.

Ordering and Identification
An ordering code system specifies gearbox configuration, including size, ratio, input/output type, and mounting position. Each gearbox has an identification label with technical information and a serial number for traceability.

Applications in Lifting Systems
Bevel gearboxes are used in multi-point lifting systems to synchronize linear movement. Selection considerations include lifting speed, load, and layout type, with recommendations for high-speed applications to prevent vibrations and ensure safety.

Additional Products
SERVOMECH offers related products, including acme and ball screw linear actuators, screw jacks, and ball screws, with various sizes and capacities for different applications.

Distributor Information
Distributed by Bevel Gearboxes, SERVOMECH s.p.a., located in Anzola dell’Emilia, Italy. Contact via phone or fax, or visit their website for more information.

Catalog excerpts

Bevel gearboxes

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Bevel gearboxes BG Series © Copyright SERVOMECH This catalogue contents are under publisher copyright and may not be reproduced unless permission is agreed. Every care has been taken to ensure the accuracy of the information contained in this catalogue, but no liability can be accepted for any errors or omissi

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Bevel gearboxes BG Series Bevel gearboxes description The SERVOMECH s.p.a. bevel gearboxes BG Series is the result of an accurate and modern design technology and of the precise calculation of each single component and its assembling, which allows to ensure the declared performances with a high safety factor. Their development and production, totally “Made in Italy”, are carried out following the quality management procedures that SERVOMECH s.p.a. has adopted inside the company according to the UNI EN ISO 9001:2008 norm (the compliance of the quality management system to this standard is certiﬁed...

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Bevel gearboxes BG Series

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Bevel gearboxes BG Series Materials and components Housing ▪ cubic shape ▪ material: grey cast iron EN-GJL-250 (UNI EN 1561) ▪ all 6 sides machine ﬁnished ▪ on request: stainless steel Covers and hubs ▪ material: grey cast iron EN-GJL-250 (UNI EN 1561) ▪ machining: internal centring tolerance h7, outer centring tolerance f7 ▪ on request: stainless steel Solid shafts ▪ material: carbon steel C45E +H +QT (UNI EN 10083-2), hardened and tempered ▪ machining: cylindrical end, ground in tolerance j6, with key according to DIN 6885 Part 1 ▪ on request: stainless steel shaft end with spline proﬁle according...

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Bevel gearboxes BG Series Bevel gearbox selection The selection of a bevel gearbox depends on several application factors: ▪ the kinematic scheme of the application to determine the design form, the kinematic scheme of the gear assembling and the shafts’ rotation directions; ▪ torque and rotation speed required by the load (operating machine); ▪ load variability, regarding the operating machine and its inertia; ▪ working cycle: number of starts-up per hour, operating time in hours per day, duty cycle; ▪ environmental conditions, ambient temperature, presence of aggressive agents; ▪ service life...

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Bevel gearboxes BG Series The daily operating factor fu considers the number of operating hours per day, referring to operating under load with duty cycle required by the application: Operating hours / day The service life factor fd considers the life time required by the application compared to the life time calculated with performances shown in the tables (average value 10 000 hours), with reference to the gears. Theoretic service life [hours] 20 000 fd With the calculated input power P P = Pn × f c × f u × f d it is possible to calculate the torque Mt2 required on the gearbox output, considering...

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Bevel gearboxes BG Series Thermal power limit (PT) After the gearbox size has been determined, it is necessary to verify the thermal operating conditions, which means to verify if the selected gearbox can operate in the required conditions without risk of overheating of the oil lubricant and of the components. Each gearbox has a thermal power limit PT, which is determined based on continuous operating duty cycle over max. 3 hours at 20°C environment temperature, value stated in the table at the bottom of this page, which must not be exceeded without a controlled and forced cooling. In case of...

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Bevel gearboxes BG Series Design input: solid shaft, cylindrical with key, STANDARD diameter (designation: S) output: solid shaft, cylindrical with key on one of the two sides (designation: M1) input: solid shaft, cylindrical with key, LARGE diameter (designation: R) output: solid shaft, cylindrical with key on one of the two sides (designation: M1) input: solid shaft, cylindrical with key, STANDARD diameter (designation: S) output: solid shaft, cylindrical with key on both sides (designation: M2) input: solid shaft, cylindrical with key, LARGE diameter (designation: R) output: solid shaft, cylindrical...

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Bevel gearboxes BG Series input: EC motor flange and hollow shaft with cylindrical hole and keyway output: solid shaft, cylindrical with key input: IEC motor flange and hollow shaft with cylindrical hole and keyway output: solid shaft, cylindrical with key on both sides (designation: M2) input: IEC motor flange and hollow shaft with cylindrical hole and keyway output: hollow shaft, cylindrical hole with keyway input: IEC motor flange and hollow shaft with cylindrical hole and keyway ^\ ' ■ ' output: solid shaft with hub, cylindrical with key STANDARD diameter (designation: S1) input: IEC motor...

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Bevel gearboxes BG Series Technical features summary SIZE Housing side dimensions [mm] Total efﬁciency () Input: solid shaft, cylindrical with key, STANDARD diameter [mm] Input: solid shaft, cylindrical with key, LARGER diameter [mm] Output: solid shaft, cylindrical with key Output: hollow shaft with cylindrical hole and keyway Output: solid shaft with hub, cylindrical with key, STANDARD diameter [mm] Output: solid shaft with hub, cylindrical with key, LARGE diameter [mm] Input: IEC motor ﬂange Gearbox housing, shaft hub and covers material grey cast iron EN-GJL-250 (UNI EN 1561) Solid input...

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Bevel gearboxes BG Series Technical features summary BG 166 SIZE Housing side dimensions [mm] Ratio Input: solid shaft, cylindrical with key, STANDARD diameter [mm] Input: solid shaft, cylindrical with key, LARGER diameter [mm] Output: solid shaft, cylindrical with key Output: hollow shaft with cylindrical hole and keyway Output: solid shaft with hub, cylindrical with key, STANDARD diameter [mm] Output: solid shaft with hub, cylindrical with key, LARGE diameter [mm] Input: IEC motor ﬂange Gearbox housing, shaft hub and covers material grey cast iron EN-GJL-250 (UNI EN 1561) steel C45E +H +QT...

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Bevel gearboxes BG Series Nominal performances – torque and power SIZE Thermal power limit [kW] The torque and power values stated in the Nominal performances table refer to a minimum service life of 10 000 hours at following operating conditions: ▪ applied load: uniform and without variations ▪ ambient temperature: 20°C ▪ driving unit: electric motor ▪ thermal power limit value calculated considering a ▪ rotation direction: one-way continuous operating time over 3 hours at nominal ▪ 1 (one) start-up per hour performances ▪ operating hours

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Bevel gearboxes

Bevel gearboxes

Catalog excerpts

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