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Motion Control Catalog

Motion Control Catalog
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Motion Control Catalog

Product catalog summary
Overview: This technical guide from Lovejoy Inc. provides comprehensive information on motion control couplings, including safety instructions, selection processes, and specifications for various coupling styles such as Beam, Bellows, Mini Disc, Oldham, Mini Soft, Curved Jaw, and Miniature Jaw.
Safety Instructions: Users must follow safety guidelines to prevent injury or death. Key precautions include proper selection, sizing, and installation of power transmission products, avoiding shock loads, and ensuring proper alignment and maintenance. Compliance with OSHA and ASME standards for guards is mandatory.
Selection Process: Selecting the right coupling involves evaluating application requirements using the Lovejoy Motion Control Coupling Quick Reference Chart. Important factors include material, torque, torsional stiffness, bore capacity, RPM, misalignment capacity, temperature, and moment of inertia. Formulas for calculating nominal and design torque are provided.
Coupling Styles and Specifications:
  • Beam Style: Single-piece construction with options for set screws or split/clamp mounting, suitable for precise positioning.
  • Bellows Style: Available in BWC and BWLC series, allows for misalignment and is suitable for non-uniform or shock loading movements.
  • Mini Disc Style: Ensures maximum torque is within limits, checks for bore, misalignment, and torsional stiffness.
  • Oldham, Mini Soft, Mini Jaw Styles: Selection involves determining clamp or setscrew style and using service factors to calculate design torque.
  • GS Curved Jaw Style: Involves checking nominal and peak torque against coupling ratings, considering rotational inertia coefficients.
ASB Series: The Aluminum Single Beam (ASB) Series is designed for limited space applications, offering zero backlash and higher torque than the EC/ES series. Specifications include dimensions, torque, torsional stiffness, and misalignment capabilities.
ES and EC Series: These single beam style couplings are made from aluminum rods with a helical coil for flexibility, accommodating various misalignments and suitable for applications requiring zero backlash and extreme positioning accuracy.
ADB Series: The Aluminum Double Beam Series supports greater angular and parallel misalignment, offering a torque capacity of up to 88 in-lbs.
BWC Series: The Bellows Clamp Series features high torsional stiffness for accuracy and repeatability, with a torque capacity of up to 88.5 in-lbs.
BWLC Series: Offers the highest torsional stiffness among the series, supporting a torque capacity of up to 1,328 in-lbs.
MDSD Series: Compact with high torsional stiffness and low inertia, supporting moderate-high torque capabilities.
MD Series: Features higher torque capacity and moderate torsional stiffness, suitable for applications requiring repeatability.
MDS Series: Offers the highest parallel and angular misalignment capacities among mini disc couplings, with a zero backlash design.
Key Features Across Series: Most series offer zero backlash design, high torsional stiffness, and are made from durable materials like aluminum and stainless steel. They accommodate various misalignment types and offer easy installation and maintenance-free operation.
MDS Series Performance Data: Includes models MDS-32C, MDS-40C, MDS-50C, and MDS-63C, with varying torque, torsional stiffness, and RPM capabilities.
MOL Series - Oldham Style Coupling: Features a three-piece design with high torsional stiffness, accommodating severe alignment errors in compact spaces.
MSF Series - Mini Soft Style Coupling: Provides protection from misalignment, vibration, and shock loads, requiring no maintenance once installed.
GS Series - Curved Jaw Style Coupling: Offers zero backlash capability, suitable for precision applications.
Hub Designs: Includes various hub designs focusing on zero or minimal backlash and torque transmission capabilities.
L-line Miniature Jaw Coupling: Consists of two hubs and one spider, highlighting materials, features, and dimensional data for different sizes.
Elastomer Materials:
  • NBR (SOX) Rubber: Flexible, oil-resistant, standard elastomer for Jaw couplings.
  • Urethane: Offers greater torque capability than NBR, with good resistance to oil and chemicals.
  • Hytrel®: Designed for high torque and temperature operations, with excellent resistance to oil and chemicals.
  • Bronze: Rigid, oil-impregnated metal insert for slow speed applications requiring high torque.
Materials:
  • Hub Material: Sintered iron
  • Center Material: Options include NBR (SOX) Rubber, Urethane, Hytrel®, and Bronze for specific models.
Features:
  • Positive engagement with jaw interlocking
  • Fail-safe design
  • Good torsional stiffness and vibration damping
  • Easy installation
  • Exceptional overload capacity
  • Choice in center elastomer hardness
Dimensional Data:
  • L-035: Torque of 3.5 in-lbs, with dimensions and bore sizes specified.
  • L-050: Torque of 26.3 in-lbs, with larger dimensions and bore sizes.
Additional Notes:
  • Maximum bore without keyway is indicated with an asterisk.
  • Specify keyway size and bore sizes (ID1 and ID2) when ordering.
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Catalog excerpts

Motion Control Catalog-1

Motion Control In This Section: ■■ Bellows Style ■■ Mini Soft Style ■■ Mini Disc Style

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Motion Control Catalog-2

Motion Control Safety Warning When using Lovejoy products, you must follow these instructions and take the following precautions. Failure to do so may cause the power transmission product to break and parts to be thrown with sufficient force to cause severe injury or death. Refer to this Lovejoy Catalog for proper selection, sizing, horsepower, torque range, and speed range of power transmission products, including elastomeric elements for couplings. Follow the installation instructions included with the product, and in the individual product catalogs for proper installation of power transmission...

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Motion Control Catalog-4

Motion Control The selection process for determining the proper Motion Control coupling starts with selecting the coupling design that best addresses the application requirements. The Lovejoy Motion Control Coupling Quick Reference Chart (pages MC-12 and MC-13) provides a method of weighing performance characteristics of the Beam, Bellows, Mini-Disc, Oldham, Mini-Soft, Curved Jaw, and Mini-Jaw couplings. ■■Bellows ■■Mini-Soft Each coupling is compared side by side in critical categories such as: material, torque, torsional stiffness, bore capacity, maximum RPM, misalignment capacity, maximum...

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Motion Control Catalog-5

Motion Control Selection Process Lovejoy Coupling Solutions For the BWC and BWLC series Bellows coupling, Nominal Torque = in-lbs. = HP X 63025 / RPM use the following formulas: Design Torque = SF X Nominal Torque (Motor) X Inertia (Driven) Inertia (Driver) + Inertia (Driven) The Service Factors for the BWC and BWLC series should be: 1.5 for uniform movements, 2.0 for non-uniform movements, and 2.5 (maximum) non-uniform/ shock loading movements. The design torque should always be equal to or lower than the nominal rated torque of the coupling. Please consult the allowable misalignment figures...

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Motion Control Catalog-6

^ the world turns fe). f Table of Content^ Motion Control LovejoY Coupling Solutions ASB Series Performance / Dimensional Data ASB Series - Aluminum Single Beam Clamp Style Coupling The ASB (Aluminum Single Beam) Series offers additional outside diameter and overall length dimensions to the EC Series of Beam couplings. These options are extremely helpful in applications where the space available for a coupling is limited. The ASB series also offers slightly larger bore capacities than their equivalent size in the EC Series. The 5 sizes of the ASB Series along with the 3 clamping sizes in...

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Motion Control Catalog-7

Lovejoy Coupling Solutions Motion Control ES and EC Series Performance / Dimensional Data ES and EC Series - Single Beam Style Coupling The Beam flexible coupling is formed from one piece of aluminum rod. A spiral slot is cut through the length of the aluminum tube forming a “spring” center section referred to as a helical coil or beam. The flexure allowed by the beam portion of the coupling is capable of accommodating angular, parallel and axial misalignment while continuing to convey power between the attached shafts. This results in a single piece, true flexible coupling. The Miniature Beam...

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Motion Control Catalog-8

^ the world turns fe). f Table of Content^ Motion Control LovejoY Coupling Solutions ADB Series Performance/Dimensional Data ADB Series - Aluminum Double Beam Clamp Style Coupling The ADB (Aluminum Double Beam) Series coupling enhances the beam coupling options available from Lovejoy Inc. The longer overall length allows the ADB series to span longer BSE (between shaft end) measurements. The aluminum material used in its construction keeps the coupling’s weight low. The ADB design offers two flex points allowing for greater angular misalignment, up to 7°. This design also allows for up...

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Motion Control Catalog-9

Lovejoy Coupling Solutions Motion Control BWC Series Performance / Dimensional Data BWC Series - Bellows Clamp Style Coupling The BWC (Bellows Clamp) Series coupling provides a new range of coupling options with the high torsional stiffness. The higher torsional stiffness provides the benefit of accuracy and repeatability in motion control applications. The BWC series coupling features aluminum hubs and corrosion resistant steel bellow. The compact design also offers the benefit of low inertia. The BWC Series also has a torque capacity of up to 89 in-lbs, with a maximum bore capacity of .748...

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Motion Control Catalog-10

Lovejoy Coupling Solutions Motion Control BWLC Series Performance / Dimensional Data BWLC Series - Bellows Clamp Style Coupling The BWLC (Bellows Clamp) Series coupling specifically addresses higher torque and bore capacities in the area of motion control. The BWLC Series offers the highest amount of torsional stiffness for accuracy and repeatability. The BWLC Series coupling features a corrosion resistant steel bellow and aluminum or steel hubs. The BWLC Series also has a torque capacity of up to 1,328 in-lbs, with a maximum bore capacity of 1.574 inches in diameter. The larger size of the BWLC...

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Motion Control Catalog-11

Lovejoy Coupling Solutions Motion Control MDSD Series Performance / Dimensional Data MDSD Series - Mini Disc Single Disc Clamp Style Coupling The compact design of the MDSD (Mini Disc Single Disc) Series accommodates applications that allow for a minimum amount of space for the coupling. The MDSD Series coupling also features a high torsional stiffness over the MD and MDS Series. The MDSD Series also has the lowest inertia of the mini disc designs. Features ■ Zero backlash design ■ Highest torsional stiffness ■ Aluminum hubs with stainless steel discs ■ Moderate-high torque capabilities ■ Low...

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Motion Control Catalog-12

Motion Control Coupling Types CJ ES/EC Series Single beam with setscrew or clamping options ASB Series Single beam with clamping style for higher torque applications Double Beam clamping style coupling Standard Bellows style coupling Bellows style coupling Anodized Aluminum Aluminum hubs with stainless steel bellows Aluminum hubs with stainless steel bellows Bore Capacity Angular Misalignment Parallel Misalignment Axial Misalignment Maximum Temperature Anodized Aluminum Material Type Quick Reference Torsional Stiffness Torque Capacity (Nominal)

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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.