Ruland Set Screw Style Oldham Couplings


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Zero Backlash Couplings

OSC - Set Screw Oldham Coupling w/ Keyways


Large parallel misalignment Electrically isolating	Replaceable disk Balanced design

Ordering Information

For a complete coupling, order two hubs and one disk.
For example: order OSC16-8-A, OSC62-6-A and OD16/25-AT to form a complete coupling with a 1 " OD, 1/2 " and 3/8" bores and a zero backlash disk.

Clamp Style Oldham Couplings

Set Screw Oldham Couplings

THROUGH BORE HUBS

PART NUMBER	Keyway (in)	BORE B (in)	OD (in)	HUB LENGTH LH (in)	COUPLING LENGTH (in)	SHAFT PENETRATION (in)	SET SCREW
OST16-6-A	3/32	.3750	1.000	0.390	1.125	0.390	M4
OST16-8-A	1/8	.5000
OST21-6-A	3/32	.3750	1.313	0.590	1.875	0.590	M4
OST21-8-A	1/8	.5000
OST21-10-A	3/16	.6250
OST26-6-A	3/32	.3750	1.625	0.710	2.000	0.710	M5
OST26-8-A	1/8	.5000
OST26-10-A	3/16	.6250
OST26-12-A	3/16	.7500

DISCS

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

.072

0.5

0.004

0.002

OD12/19-AT

0.750

Acetal

.043

0.5

0.008

0.004

OD16/25-AT

1.000

Acetal

.033

168

0.5

0.008

0.004

OD21/33-AT

1.313

Acetal

.009

350

0.5

0.008

0.006

OD26/41-AT

1.625

Acetal

130

.008

480

0.5

0.010

0.006

OD8/13-NL

0.500

Nylon 11

1.5

.290

0.5

0.004

0.002

OD12/19-NL

0.750

Nylon 11

5.0

.140

0.5

0.008

0.004

OD16/25-NL

1.000

Nylon 11

10.0

.126

140

0.5

0.008

0.004

OD21/33-NL

1.313

Nylon 11

18.0

.052

300

0.5

0.008

0.006

OD26/41-NL

1.625

Nylon 11

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.

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