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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

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

OD8/13-NL

0.500

Nylon 11

1.5

.290

25

0.5 0.004 0.002

OD12/19-NL

0.750

Nylon 11

5.0

.140

85

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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