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Keyless Locking Devices

Keyless Locking Devices
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Keyless Locking Devices

Product catalog summary
Introduction
Fenner Drives offers a range of Keyless Bushings and Specialty Locking Devices designed to enhance machine design by eliminating traditional keyed connections. These products provide easy installation, design flexibility, and heavy-duty capacity.
Keyless Bushing Series
  • Series B103, B106, B109: Features a shallow, single taper design with integrated push-off threads for exceptional concentricity and minimal axial movement.
  • Series B400: Self-releasing, double taper design for easy adjustment and removal, with optional pilot bushings for pre-centering.
  • Series B800: Thin, extra-wide sleeves for low contact pressures, suitable for smaller diameter hubs, with integrated spacer sleeves to prevent axial movement.
Specialty Locking Devices
  • WK Shaft Couplings: Rigid shaft coupling with external locking device for high torque and bending moments.
  • Shrink Discs: Provide a concentric and balanced mechanical interference fit, available in various duty series and designs.
Traditional vs. Keyless Connection Methods
Traditional methods like keys and interference fits have drawbacks such as high costs and limited reusability. Keyless bushings offer zero backlash, uniform pressure distribution, and can mount on plain shafting without oversizing.
Advantages of Keyless Bushings
  • Uniform pressure distribution similar to shrink or press fits.
  • Zero backlash connections without keyways or splines.
  • Cost-effective designs with smaller shafts and bearings.
  • Simple installation, adjustment, and removal.
Selection Assistance
A comparison chart is provided to assist in selecting the appropriate series of B-LOC or Trantorque Keyless Bushings based on factors like shaft size, torque transmission, and concentricity.
Conclusion
Fenner Drives Keyless Bushings and Specialty Locking Devices offer innovative solutions for modern mechanical power transmission needs, optimizing productivity and reducing costs compared to traditional methods.
Keyless Bushing Overview
Keyless bushings, such as B-LOC and Trantorque, are used to mount components to shafts without keys or keyways. The choice depends on shaft size and application requirements.
Shaft Size Specifications
Trantorque bushings accommodate shaft sizes from 1/8" to 3", while B-LOC bushings fit shafts from 1/4" to 24". Trantorque is recommended for shafts 1-1/2" and under, and B-LOC for shafts 2" and over.
Installation Procedures
B-LOC bushings use multiple screws for installation, distributing force and allowing for low individual screw torque. Trantorque bushings use a single hex nut, offering quick installation but requiring higher torque.
Design Considerations
Factors such as OD/ID ratios, torque requirements, and specific application needs influence bushing selection. Double taper B-LOC models may be necessary for demanding applications.
Application Examples
Fenner Drives bushings are used in various industries, from medical devices to heavy machinery, such as mounting rotors on crushers and connecting timing pulleys in canning machines.
Made to Order (MTO) Solutions
Custom MTO bushings are available for unique applications, utilizing special materials, coatings, and designs.
Engineering Information
Keyless bushings require specific surface finishes and concentricity for optimal performance. Special considerations are needed for temperature changes and hollow shafts.
Torque and Installation
Torque capacity is a function of tightening torque and should exceed peak drive torque. Modified installation torque can adjust capacity within specified limits.
Specifications
Detailed specifications for Fenner Drives Keyless Bushings include torque and thrust capacities, bending moment capacities, and radial load capacities. Equations for calculating transmissible thrust and resultant torque are provided.
Procedures
Guidelines for selecting the appropriate keyless bushing based on torque and bending requirements are included. The installation process requires a dry interface to maximize torque capacity.
Norms and Recommendations
Recommendations for hub sizing and tolerance specifications for shaft and bore machining are provided. Consultation with a Fenner Drives Applications Engineer is advised if limits are exceeded.
Technical Data
Tables with technical data for various bushing models detail dimensions, locking screw specifications, torque, thrust, and hub pressure capacities.
Overview
This document provides technical specifications and guidelines for Fenner Drives' B-LOC Shrink Discs and WK Couplings, used for high torque and bending load applications.
Specifications
Lists various models of shrink discs and couplings, detailing dimensions, torque capacities, and installation requirements.
Procedures
Installation guidelines emphasize solvent cleaning the interface for increased torque transmission.
Standards and Recommendations
Recommendations include using an oil-free connection for enhanced performance and contacting Fenner Drives Applications Engineering for specific needs.
Product Variants
Describes different types of shrink discs, including Single Taper and Double Taper variants.
Application Data Requirements
A detailed application data sheet is provided for customers to fill out, helping tailor product recommendations.
Contact Information
Fenner Drives provides contact details for their offices in the USA and UK for support and product information.
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Catalog excerpts

Keyless Locking Devices-1

3Fenner Drives Keyless Bushings & SPECIALTY LOCKING DEVICES B-LOC. Trantoroue

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Keyless Locking Devices-4

Fenner Drives Keyless Bushings t Specialty Locking Devices From the moment the wheel came into existence, man bas been faced with tbe seemingly simple task of mounting bis invention to a shaft so tbat something useful coufd be accomplished. Though it has been over $,S00 years since thse rotating components bave made their way into use, nwny designs still utilize mounting metbods not mucb improved from the days of antiquity. Th騨se traditional connection methods include: interfrence fits (shrink or pressl keys and keyways, sptines and quick dtachable bushings. In the sections that follow, we compare...

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Keyless Locking Devices-6

B-LOC or Tian torque : the Endiuing Question Once you have decided that a keyless bushing is the right solution, your next big dcision is which sries ofFenner Drives B-LOC or Trantorque Keyless Bushings to choose. While the underfying engineering principle for both B-LOC ond Trantorque Keyiess Bushings is exactly the same, the functionality of each may appeal to diff驩rent applications and situations. SELECTION ASSISTANCE Shaf t Stte Range Torque Transmission Axial Movement Self Ceniering Concentrkiiy lance SHf-Lockino. Tjpers B-LOC B109 tt- 1%in; 6 35mm 167-5.929 in Ib; 19 - 683 Nm No Yes Excellent...

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Keyless Locking Devices-7

Internai or Extemal Al the hroadest levd< tht prnduu line may be split into two tatcgorl ■\ivk .'. H n ih i ri-.-_. (internai) and Spccialty Locking Devices (cxtcmil). Sciccrion among Spccialty Locking Devices 15rctarivcly straightforward. If you arc joining two solid shafts at their ends, kt page 48 for dtails on our B-LOC WK Sries Kigid Oouplitii-s. *lo connect r.i- ■.: industry standard coupling hubs or Ranges, gcaiboxcs w驯th holluw ouipui shafts* or certain orher similarly configured power transmission comportent», a B-LOC Shrink Disc may be best suitcd; sec page 45* Most applications, however,...

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Keyless Locking Devices-8

Fenner Drives Keyless Bushings SiSpeciaity Locking Devices From prcision mdical devices to powerful turbines, Fenner Drives Keyless Bushings are perfectly suited for use in any industry where there is a need to mount a component to a shaft Every day our customers find unique uses for the engineering 驩lgance of our keyless bushings. The application examples shown are just a s ma H sampling of the tnany thousands of possible applications for Fenner Drives Keyless Bushings. So ask yourself, "What do I need to mount today?" fTj B4.0C Shrink Dises aod WK Sries R驯gid CoupJings f7] He*vy Dut/ Shrink...

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Keyless Locking Devices-9

B-LOC r B106 connects mill chain sprocket ' and permits simple timing of matched kJcxer amis on wood processing infeed taHe. 6 Standard Duty Shrink Oise ח' timuJtaneousJy transmils torque and thrust as standard shaft/hub connection speerfied on rcvoJubonary ar-gap rnagneipc couptng. He*/y Duty B112 mounts rotor on an aggrcgate impact crusher. Standard Duty Shrink Disc provides zro backlash connection for flexible dise coupllng on packaging equipmenL i 9 Meeum Duty Bl 15 intgrtes with modem engineered dass pulley design to maximise operating life (transparent -, r,% : CJq He»/y Duty Bl 12 used...

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Keyless Locking Devices-10

TrantorQue | / 1 Trantorque GT conrwcts a bming pulley ^"■^ to shaft on a canning machine | 2 ! Tran torque GT mounrs a rolter d^aln sprocket ^ lo a kcyiess reA*cer output shaft. B Trantorque GT connecte a syndronous bek puley lo rear wheei of hybrid vehfcle (transparent view). | 41 Trantorque a rack and OE emures z٩ro baddash on pinion drive. i 5 j Trantorque Mini provides a solution lor mounfing comportent* in bght spaces on very small shafts. such as for this timing pulley on a linear slide. FermerDrives

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Keyless Locking Devices-11

| 6 | Trantorque S positions a sries of lever arms, greatly simplifying installation and timing. | 7 I The Trantorque GT units on this battling * robot allowed the designers to eliminate keys and keyways, resulting in a lighter yet stronger machine. | 8 I Trantorque GT is perfect for high speed, low torque applications where balance is critical, as on this fan hub. 9 | Trantorque NT allows worn conveyor rolls to be replaced quickly and easily. 10 This Trantorque GT 陗 like ail of our keyless bushings features infinitש radial positioning, making timing of this run-out table chain drive quick and...

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Keyless Locking Devices-12

Made to Order (MTO) Fenner Drives offers a wide slection of standard keyless bushings to meet most shaft/component mounting needs. However, we realize that to be innovative in a global marketplace, today's engineers often require custom solutions. With unrivaled engineering expertise in keyless bushing design and material slection coupled with world class manufacturing capabilities, Fenner Drives is well positioned to offer MTO Keyless Bushings. From the ordinary to the extraordinary our engineering team is ready to work with you. Together, we will develop a unique keyless bushing to meet your...

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Keyless Locking Devices-13

Lubricants The use of lubricants on threads and in some spcial cases, tapers, can have dramatic impact on keyless bushing properties. Light machine oil Synthetic grease FDA approved lubricants Screws Performance of many B-LOC Keyless Bushings is determined by the screw grade used. Additionally, particular applications may benefit from a custom screw configuration. Image 4: This MTO Shrink Disc illustr院tes our ability to expertly design and manufacture spcial products for anysize application, large orsmall. Image 5: A positioning flange is machined both inside the bore and at the back ofthe outer...

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Keyless Locking Devices-14

Keyless Bushings Engineering Information SURFACE FINISH Recommended surface finish for shafts and hub bores to be used with Fenner Drives Keyless Bushings is between 32 and 125 micro-inch RMS. A smoother finish such as that found on components supplied TG&P (turned, ground and polished) ח is NOT recommended and can result in a failure of the connection. Note that surface finishes below 32 micro-inch RMS can be roughened using longitudinal abrasion with a bastard file, emery paper or similar to achieve a surface finish within the recommended range. CONCENTRICITY Fenner Drives Keyless Bushings...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.