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Part Number 68514448922, RRU Type Hubs - Rough Stock Bore

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RRU Type - Drop-Out Style
    The RRU Type Uniflex coupling is designed for fast, easy installation and removal without disrupting the connected shafts. This is ideal when servicing impellers, bearings and seals. The design consists of two steel hubs fastened with cap screws to a Uniflex double flange coupling (UF Type). The RRU is easily disassembled by simply removing the cap screws and sliding out the UF center spring section.
    This design offers “quick disconnect” for drop out requirements. It can also accommodate a slightly larger shaft diameter than the standard U Type.
    Note: A complete RRU Type coupling is comprised of 2 hubs, 2 hardware kits, and a UF Type center drop out section.




Specifications  · Dimensional Data  · Performance Data  · Coupling Design  · Notes

Specifications

Description 
RRU150-HUB-3/4 RSB

Hub Style
RRU Hub

Coupling Type
Drop-Out

Material
Steel

Color
Gray/Metallic

Bore Type
Rough Stock Bore

Weight
10.00 lb


Dimensional Data

Bore Size 
3/4 in

Coupling
RRU150

Set Screw Thread Size (Dimension T)
No Setscrew

Keyway Size (W x D)
No Keyway

Overall Length
7.660 in
194.56 mm

Min. Bore (Dimensions ID1/ID2)
0.750 in
19.05 mm

Max. Bore (Dimensions ID1/ID2)
2.125 in
53.98 mm

Dimension BC
4.380 in
111.25 mm

Dimension D
5.000 in
127.00 mm

Flange Diameter (Dimension FD)
5.380 in
136.65 mm

Dimension FL
0.620 in
15.75 mm

Dimension FL1
0.500 in
12.70 mm

Dimension HD
3.75 in
95.25 mm

Dimension HL
2.120 in
53.85 mm

Dimension S
3.440 in
87.38 mm

Pin Location (Dimension SL)
0.820 in

Pin Size
3/8 in

Cubic inches
61.36213 in³


Performance Data

Max. Torque
1890.00 in·lb

Max. Speed
3000 rpm

Max. Recommended End Play
0.040 in
1.02 mm

Max. Parallel Offset
0.041 in
1.04 mm

Max. Angular Offset
3.00 º

Wind-Up Angle at Max. Torque
0.85 º

Rated HP at 100 rpm
3.02 hp

# of Set Screws Required per Hub
1

Normal Temperature Range
-40 to 240 ºF

Max. Torque
213.5 N·m
1890 in·lb


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

Notes 
  • OAL Tolerance + .19 inch.
  • Total backlash is approximately 1/3 of windup at maximum torque – consult Lovejoy Engineering for more information.


 DOWNLOADS 

Specialty Products Catalog
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Uniflex Installation Instructions
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