Lovejoy U-87S Shaft-to-Shaft Uniflex Coupling 3/4 In Bore A/B w Kw

Categories: Agricultural couplings, Couplings, Collars & Universal Joiners, Industrial Tags: lovejoy, spring coupling

Description

Lovejoy U-87S Shaft-to-Shaft Uniflex Coupling 3/4 In Bore A/B w Kw

Lovejoy 68514426104 U-87S Shaft-to-Shaft Uniflex Coupling , 3/4″ Bore A, 3/4″ Bore B, 1.73″ OD, 2.91″ Overall Length, 346 in-lbs Max Torque, 10000 RPM Maximum, 3/16″ x 3/32″ Keyways

Dimensional Data

Bore Size	3/4 x 3/4 in
Hub Size	U87S
Set Screw Thread Size (Dimension T)	1/4-20
Keyway Size (W x D)	3/16 x 3/32 in
Dimension HD	1.730 in43.94 mm
Overall Length	2.910 in73.91 mm
Pin Size	0.188 in
Pin Location (Dimension SL)	0.44 in
Length thru Bore	0.840 in 21.34 mm
Min. Bore (Dimensions ID1/ID2)	0.438 in 11.00 mm
Max. Bore (Dimensions ID1/ID2)	0.875 in 22.23 mm
Cubic inches	8.70934 in³

Performance Data

Operating Temperature Range	-40 to 250 ºF
Max. Torque	346 in·lb
Max. Speed	10000 rpm
Axial Misalignment (∆ Ka)	0.020 in 0.51 mm
Max. Parallel Misalignment	0.024 in 0.61 mm
Wind-Up Angle at Nominal Torque	1.17 º
Wind-Up Angle at Max. Torque	3.00 º
Rated HP at 100 rpm	0.55 hp
# of Set Screws Required per Hub	1

Coupling Design

Flexible Spring Type Coupling with Exclusive Triple Wound Spring Design

The Uniflex Coupling is an all steel, single piece coupling that solves a variety of application concerns including: high misalignment, space limitations, high temperature, and exceptionally low backlash/windup. The unique flexing center of the Uniflex consists of three opposingly wound square wire springs for forward or reverse operation. Two steel hubs are then brazed to the steel spring pack to create a durable one-piece flexible coupling.

Notes

Total backlash is approximately 1/3 of windup at maximum torque – consult Lovejoy Engineering for more information.
OAL Tolerance: + 1/8 inch.

Flexible couplings are used to link two rotating shafts that are not aligned in order to transmit the rotational power, known as torque, from one shaft to the other.

Most flexible couplings consist of two hubs and a middle assembly; each hub attaches to a shaft while the middle assembly flexes between the hubs to accommodate the misalignment of the two shafts.

Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotational power from one shaft to another in the form of stresses, loads, vibrations, and other forces, which vary from one type of misalignment to another.

Flexible couplings are used in a broad range of applications, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.

Lovejoy manufactures flexible couplings, universal joints, variable speed drives, and other transmission and mechanical power products.

The company, founded in 1900, is headquartered in Downers Grove, IL.