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
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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.
