Lovejoy U-125S Shaft-to-Shaft Uniflex Coupling 1-1/4 In Bore A 1-1/4 In Bore B w Kw

68514413570, U Type with Keyway, Short Version – Inch (Imperial) Bores

Dimensional Data

Bore Size	1 1/4 x 1 1/4 in
Hub Size	U125S
Set Screw Thread Size (Dimension T)	3/8-16
Keyway Size (W x D)	1/4 x 1/8 in
Dimension HD	2.170 in55.12 mm
Overall Length	3.75 in95.25 mm
Pin Size	0.313 in
Pin Location (Dimension SL)	0.62 in
Length thru Bore	1.100 in27.94 mm
Min. Bore (Dimensions ID1/ID2)	0.625 in16.00 mm
Max. Bore (Dimensions ID1/ID2)	1.25 in31.75 mm
Cubic inches	17.65838 in³

Performance Data

Operating Temperature Range	-40 to 250 ºF
Max. Torque	755 in·lb
Max. Speed	6000 rpm
Axial Misalignment (∆ Ka)	0.020 in0.51 mm
Max. Parallel Misalignment	0.030 in0.76 mm
Wind-Up Angle at Nominal Torque	1.22 º
Wind-Up Angle at Max. Torque	3.00 º
Rated HP at 100 rpm	1.21 hp
# of Set Screws Required per Hub	1

Coupling Design

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.

Lovejoy U-125S Shaft-to-Shaft Uniflex Coupling 1-1/4 In Bore A 1-1/4 In Bore B w Kw

 

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.

Asin	B004S2T0WK