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RULAND Carefully Made Shaft Collars and Couplings German Chinese English since 1937 Ruland Shaft Collars & Shaft Couplings
Oldham Couplings Shaft Collar in Shell
grey block
 

OST - Set Screw Oldham Coupling

Set Screw Oldham Coupling

Features

  • Large parallel misalignment
  • Electrically isolating
  • Balanced design
  • Replaceable disk
  • Bore tolerance: +.002"/-.000"
  • Maximum speed: 4,500 RPM
  • Temperature range (Deg. F)
    with Acetal Disk: -10° to 150°
    with Nylon Disk: -10° to 130°


  distributor

How to Specify

For a complete coupling, order two hubs and one disk.

To order hubs, choose any bore size (inch, metric or mixed) available in a body size. Part numbers are in the following format with numbers representing sixteenths of an inch:

order ost

To order disk, choose material type and hub body size (OD). Inch dimensions are on the left side of the “/” and metric sizes are on the right. For example:

order od
Clamp Oldham Couplings
Set Screw Oldham Couplings
 

THROUGH BORE HUBS

  Click part number for 3D CAD file
Aluminum Bore B (in) OD (in) Hub Length
LH (in)		 Coupling Length
(in)		 Shaft Penetration
(in)		 Set Screw
OST8-2-A .1250
0.500
0.222
0.625
0.222
M3
OST8-3-A
.1875
OST8-4-A .2500
OST12-3-A
.1875
0.750
0.300
0.875
0.300
M3
OST12-4-A
.2500
OST12-5-A
.3125
OST16-4-A
.2500
1.000
0.390
1.125
0.390
M4
OST16-5-A
.3125
OST16-6-A
.3750
OST16-8-A
.5000
OST21-5-A
.3125
1.313
0.590
1.875
0.590
M4
OST21-6-A
.3750
OST21-8-A
.5000
OST21-10-A
.6250
OST26-6-A
.3750
1.625
0.710
2.000
0.710
M5
OST26-8-A
.5000
OST26-10-A
.6250
OST26-12-A
.7500

DISKS

  Click part number for 3D CAD file
Part Number OD (in) Material Rated Torque
(lb-in)		 Torsional
Stiffness
(Deg/lb-in)		 Static Break
Torque
(lb-in)		 MISALIGNMENT
Angular (Deg) Parallel (in) Axial Motion (in)
 OD8/13-AT 0.500 Acetal 6 .072 34
0.5 0.004 0.002
OD12/19-AT 0.750 Acetal 20 .043 93
0.5 0.008 0.004
 OD16/25-AT 1.000 Acetal 42 .033 168
0.5 0.008 0.004
OD21/33-AT 1.313 Acetal 70 .009 350
0.5 0.008 0.006
OD26/41-AT 1.625 Acetal 130 .008 480
0.5 0.010 0.006
 OD32/51-AT 2.000 Acetal 250 .005 750
0.5 0.010 0.008
OD36/57-AT 2.250 Acetal 375 .003 1100
0.5 0.010 0.008
OD8/13-NL 0.500 Nylon 1.5 .290 25
0.5 0.004 0.002
OD12/19-NL 0.750 Nylon 5.0 .140 85
0.5 0.008 0.004
OD16/25-NL 1.000 Nylon 10.0 .126 140
0.5 0.008 0.004
OD21/33-NL 1.313 Nylon 18.0 .052 300
0.5 0.008 0.006
OD26/41-NL 1.625 Nylon 32.0 .037 400
0.5 0.010 0.006


Note 1 Hardware is alloy steel with black oxide finish. Parts OST8 and OST12 have one set screw. OST16, OST21 and OST26 have two set screws 90° apart.
Note 2 Performance ratings are for guidance only. The user must determine suitability for a particular application.
Note 3 Couplings supplied with black anodized aluminum hubs.

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