Lovejoy RRU-87 Drop-Out Style Uniflex Coupling Hub 1/2 In Bore No Kw
68514446477, RRU Type Hubs without Keyway – Inch (Imperial) Bores
Dimensional Data
Bore Size | 1/2 in |
Coupling | RRU87 |
Set Screw Thread Size (Dimension T) | 1/4-20 |
Keyway Size (W x D) | No Keyway |
Overall Length | 4.840 in122.94 mm |
Min. Bore (Dimensions ID1/ID2) | 0.438 in11.13 mm |
Max. Bore (Dimensions ID1/ID2) | 1.375 in34.93 mm |
Dimension BC | 2.250 in57.15 mm |
Dimension D | 2.750 in69.85 mm |
Dimension FD | 2.880 in73.15 mm |
Dimension FL1 | 0.380 in9.65 mm |
Dimension HD | 2.870 in72.90 mm |
Dimension HL | 1.380 in35.05 mm |
Dimension S | 2.120 in53.85 mm |
Pin Location (Dimension SL) | 0.690 in |
Pin Size | 3/16 in |
Cubic inches | 11.44627 in³ |
Performance Data
Max. Torque | 346.00 in·lb |
Max. Speed | 10000 rpm |
Max. Recommended End Play | 0.040 in1.02 mm |
Max. Parallel Offset | 0.035 in0.89 mm |
Max. Angular Offset | 4.50 º |
Wind-Up Angle at Max. Torque | 1.68 º |
Rated HP at 100 rpm | 0.55 hp |
# of Set Screws Required per Hub | 1 |
Max. Torque | 346 in·lb |
Coupling Design
Coupling Design | Flexible Spring Type Coupling with Exclusive Triple Wound Spring Design
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Lovejoy RRU-87 Drop-Out Style Uniflex Coupling Hub 1/2 In Bore No Kw
This Lovejoy RRU steel coupling hub can be fastened with cap screws to both ends of a Uniflex double flange coupling for connecting rotating shafts and providing low backlash/windup.
The hub has a quick disconnect design to meet drop out requirements. This hub is made of steel for strength and durability, has a finished bore that fits onto shaft without the need for machining, and requires no lubrication.
It is resistant to oil, grease, dirt, and most industrial chemicals. This hub can be used with couplings suitable for applications such as printing and binding registration, robotics/positioning, conveyors, machine tools, centrifugal pumps, agricultural machinery, blowers, winding machines, and steering mechanisms.
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.
Lovejoy RRU-87 Drop-Out Style Uniflex Coupling Hub 1/2 In Bore No Kw
