Zoro Homepage
Clipboard Icon Quick Order
Cart Icon 0 Cart
  1. Home
  2. /
  3. Power Transmission
  4. /
  5. Bearings, V-belts & Power Transmission Equipment
  6. /
  7. Couplings, Collars, & Adapters
  8. /
  9. Motion Control Couplings
  10. /
  11. Coupling, 4 Beam, Bore 1/2x1/4 In
Ruland Coupling, 4 Beam, Bore 1/2x1/4 In PSR18-8-4-A - main

Coupling, 4 Beam, Bore 1/2x1/4 In

  • Mfr # PSR18-8-4-A

  • Zoro # G2968691

product price: $55.19
/ea

Key Features

Shaft Locking Type - Couplings
1 Piece Set Screw
Bore Dia.
1/2 in x 1/4 in
Rated Torque
34 in-lb
Max. RPM
6,000 RPM
Outside Dia.
1.125 in
See all product information
Get a 10% off coupon
Free 30-day returns
Return Policy
Get 30 days to pay with Net 30
Apply Now
Real support from real people
Contact our U.S. based team

Specifications

Product Information

MFR #
PSR18-8-4-A
Zoro #
G2968691
UPC #
634529034156
Country of Origin
United States

Dimensions

Bore Dia.
1/2 in x 1/4 in
Outside Dia.
1.125 in
Overall Length
1 1/2 in
Screw Size
M5
Outside Dia. (In.)
1.125
Length through Bore (In.)
0.750
Clearance Dia. (In.)
1.125 in
Overall Length (In.)
1.50
Screw Size (mm)
M5
Hub Dia.
1.25 in
Length through Bore
0.75 in
Coupling Outside Diameter
1 1/8 in
Length Through Bore 1
0.7 in
Screw Thread Size
M5
Different Bore Sizes
Yes
Bore Diameter 1
1/2 in
Length Through Bore 2
0.7 in
Bore Diameter 2
1/4 in

Details

Shaft Locking Type - Couplings
1 Piece Set Screw
Rated Torque
34 in-lb
Max. RPM
6,000 RPM
Material - Couplings
Aluminum
Max. Temp.
225 Degrees F
Max. Parallel Misalignment (In.)
0.015 in
Style
4 Beam Set Screw
Max. Angular Misalignment
3 Degrees
Max. Temp. Range (F)
225
Material
Aluminum
Max. Axial Misalignment (In.)
+/-0.010
Item - Motion Control Couplings
Motion Control Coupling
Screw Type
Set Screw
Torque (In.-Lbs.)
34
Torsional Stiffness (Deg./In.-Lbs.)
0.22
Finish
Bright
Item
Motion Control Coupling
Dynamic Torque Non-Reversing
17 lb-in
Screw Material
Alloy Steel
Dynamic Torque Reversing
8.5 lb-in
Moment of Inertia
0.0217 lb-in sq
Bore Tolerance
+0.001/-0.000 in
Axial Motion
0.01 in
For Environment
Angular Misalignment, Axial Motion, Parallel Misalignment
Coupling Material
Aluminum
Number of Locking Screws
4
Zero Backlash
Yes
Features
Balanced Design for Reduced Vibration, Higher Torque Capacity, Larger Body Sizes than Single Beam Couplings, Lower Windup, Machined from a Single Piece of Material, Two Sets of Two Spiral Cuts, Zero-Backlash
Bore Type
Round
Coupling Material Finish
Bright
Screw Material Finish
Black Oxide
Parallel Misalignment
0.015 in
Minimum Operating Temperature
-40 Degrees F
For Misalignment Type
Angular, Axial, Parallel
Coupling Material Grade
7075
Full Bearing Support Required
Yes
Fastener Tightening Torque
4 N-m
Standards
Conflict Minerals Compliant, DIN 912 12.9 Screws, REACH Compliant, RoHS Compliant
System of Measurement
Inch
Included Screws
(4) Set Screw
Angular Misalignment
3 Degrees
Application
Light-Duty Power Transmission, Servo Motors to Lead Screws
Number of Beams
4
Shaft Locking Type
Set Screw
Maximum Operating Temperature
225 Degrees F
Shaft Tolerance
+0.0000/-0.0005 in
Maximum Speed
6,000 RPM
Maximum Torque
34 in-lb
Series
PSR
Torsional Stiffness
4.55 in-lb/Deg

Description

Motion Control Coupling, Angular Misalignment 3 Degrees , Bore Diameter 1 1/2 in, Bore Diameter 2 1/4 in, Coupling Material Aluminum, Coupling Outside Diameter 1 1/8 in, Maximum Speed 6,000 RPM, Maximum Torque 34 in-lb, Axial Motion 0.01 in, Overall Length 1 1/2 in, Parallel Misalignment 0.015 in, System of Measurement Inch, Different Bore Sizes Yes, Torsional Stiffness 4.55 in-lb/Deg, Bore Type Round, Shaft Locking Type Set Screw, Number of Beams 4, Length Through Bore 2 0.7 in

Restrictions

WARNING: Cancer and Reproductive Harm For more information go to www.P65Warnings.ca.gov

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.

Explore More Products