Industrial power transmission couplings technology

Power transmission couplings to replace Universal joints, Jaw couplings and elastomeric couplings

Industrial machinery run 24/7 365, modern life demands a lot from this machinery and when the equipment is not running its costing money through lost orders, worker down time and customer dissatisfaction.

Lets look at the mechanical power transmission couplings that make up the industrial couplings in the industrial distribution space and compare them

Beam Coupling – a beam coupling is a high speed coupling machined from a single piece of metal, its is an industry standard when it comes to flexible coupling in the industrial marketplace but it also has its own shortcomings, the main one being the angle of what it can be used, 4°. That is the maximum it can be used at before its starts to create vibration and wear itself out, meaning equipment and component damage, downtime for replacement and/or repair. Beam couplings cannot handle much torque.

Bellows Coupling – A servo coupling very similar to the beam coupling, it is made of a number of pieces not a single piece like the Twin Spring Coupling, again like the Beam couplings they can only be used to a few degrees before starting to wear and vibrate. They also cannot take much torque either

Elastomeric Coupling – Another flexible coupling made up of 2 hubs and a flexible center hub. This center hub allows to flex but while it handles very high levels of torque it also can only work at a few degree. These couplings include tire, donut and any other coupling like TB Woods Sure Flex, or Lovejoy S-flex.

Jaw Coupling -The last of the commonly used servo coupling, again low torque and small angle of misalignment but it is used for its vibration dampening center and jaw like in case of failure, this allows the coupling to remain functional but has to be replaced immediately.

Universal Joints – The uni joint is used in the industrial marketplace because of the need for companies needing more than the 4° typically found with servo couplings. Universal joint can run at high torque but are limited by the speed they can be used at and require constant maintenance due to their multi piece design. As the angle of usage goes up the vibration does as well which limits both speed and torque being transmitted. Lovejoy couplings are the most widely used but have the same disadvantages.

 

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Product Range

Boston Gear FC20-1

5/8″1 1/8″1 7/16″2″3 11/16″1 3/4″1 1/8″4 13/16″

Lovejoy 1080 SPACER HUB S=3.469

Specifications
Description 
1080 SPACER HUB S=3.469W/HDW
Type
Grid Coupling
Hub Material
Alloy Steel
Color
Gray/Metallic
Bore Type
No Bore
Weight
21.01 lb

Lovejoy 1090 SHAFT HUB 3in 3/4 X3/8 KW

Lovejoy 69790406552 Specifications
Description 
1090 SHAFT HUB 3" 3/4X3/8KW
Type
Grid Coupling
Hub Material
1045 Steel
Style
Bored
Color
Gray/Metallic
Bore Type 
Finished Bore and Keyway
Weight
25.33 lb
  • For use with Lovejoy 1000 series grid coupling assembly (sold separately)
  • Open-style shaft hub for horizontal- or vertical-style grid coupling assemblies
  • Stamped steel for strength and durability
  • Supports constant angular misalignment of up to 0.25 degrees
  • Imperial unit measurements for industry consistency

Couplings, Collars & Universal Joiners

Lovejoy 1070 HUB S=2.344

Lovejoy 1070 HUB S=2.344

  • For use with Lovejoy 1000 series grid coupling assembly (sold separately)
  • Spacer design with drop-out section for access to serviceable elements without disturbing motor mountings
  • Die-cast aluminum is lightweight and resists corrosion and tarnishing
  • For use with horizontally split hub covers where mounting space is limited
  • Imperial unit measurements for industry consistency

  • Specifications
    Description 
    1070 SPACER HUB S=2.344W/HDW
    Type
    Grid Coupling
    Hub Material
    Alloy Steel
    Color
    Gray/Metallic
    Bore Type
    No Bore
    Weight
    10.73 lb

Couplings, Collars & Universal Joiners

Lovejoy 1090 SHAFT HUB 2-7/8

Lovejoy 1090 SHAFT HUB 2-7/8

Lovejoy 69790406551 Specifications

Description 

1090 SHAFT HUB 2-7/8 3/4KW

Type

Grid Coupling

Hub Material

1045 Steel

Style

Bored

Color

Gray/Metallic

Bore Type 

Finished Bore and Keyway

Weight

25.99 lb

Lovejoy 1050 3.5 Grid Half Spacer Hubs w/ H Split Covers Metric

Features 

  • High tensile, shot-peened alloy steel grid springs and precision machined hubs ensure superior coupling performance and long life.
  • Lovejoy’s grid couplings with tapered grids are designed to be interchangeable with other industry standard grid couplings with both horizontal and vertical grid covers.
  • Lovejoy grid couplings are designed for ease of installation and maintenance reducing labor and downtime costs.
  • The torsional flexibility and resilience of Lovejoy grid couplings helps reduce vibration and cushions shock and impact loads.
  • Cover fasteners can be provided in either Inch or Metric sizes.
  • Excellent for use in applications where the equipment is close coupled or spaced apart requiring a spacer style coupling arrangement.
  • Stock spacer designs are available or requests for custom spacer lengths can be addressed by Lovejoy engineering.

Specifications

Description 
1050 SPACER HUB S=3.500W/HDW
Type
Grid Coupling
Hub Material
Alloy Steel
Color
Gray/Metallic
Bore Type
No Bore
Weight
8.61 lb

Lovejoy 1050 2.062 Grid Half Spacer Hubs w H Split Covers Metric

Specifications

Description 
1050 SPACER HUB S=2.062W/HDW
Type
Grid Coupling
Hub Material
Alloy Steel
Color
Gray/Metallic
Bore Type
No Bore
Weight
5.38 lb