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Oldham Couplings Shaft Collar in Shell
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MOCT - Metric Clamp Oldham Coupling
Metric Clamp Oldham Coupling

Features

  • Large parallel misalignment
  • Electrically isolating
  • Balanced design
  • Replaceable disk
  • Bore tolerance: +.025mm/-.000mm
  • Maximum speed: 4,500 RPM
  • Temperature range (Deg. F)
    with Acetal Disk: -10° to 150°
    with Nylon Disk: -10° to 130°

Notes

  • Aluminum hubs are standard
  • Hubs available in stainless steel
  • Inch and metric hubs (set screw or clamp) can be combined into a single coupling as long as they have the same outside diameter (OD)
Ruland Hub Size (OD) Equivalents
Inch
Metric
8
0.500"
=
13
12.7mm
10
0.590"
=
15
15.0mm
12
0.750"
=
19
19.1mm
16
1.000"
=
25
25.4mm
21
1.313"
=
33
33.3mm
26
1.625"
=
41
41.3mm
32
2.000"
=
51
50.8mm
36
2.250"
=
57
57.2mm
  distributor

How to Specify

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

To order hubs, choose any bore sizes (inch or metric in any style) available in the same outside diameter (OD). Part numbers are in the following format with an example of an inch to metric mixed coupling.

order moct

order oct

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
Oldham Couplings
Clamp Oldham Coupling
Set Screw Oldham Coupling
Coupling Support Form
Product Index
 

THROUGH BORE HUBS

  Click part number for 3D CAD file
Aluminum Bore
B (mm)		 OD
(mm)		 Hub Length
LH (mm)		 Coupling Length
L (mm)		 Shaft Penetration
(mm)		 Clamp Screw
MOCT19-4-A 4 19.1 9.7 25.4 9.7 M2.5
MOCT19-5-A 5
MOCT19-6-A 6
MOCT19-7-A 7
MOCT19-8-A 8
MOCT25-6-A 6 25.4 11.9 31.8 11.9 M3
MOCT25-7-A 7
MOCT25-8-A 8
MOCT25-9-A 9
MOCT25-10-A 10
MOCT25-12-A 12
MOCT33-8-A 8 33.3 15.0 47.6 15.0 M3
MOCT33-9-A 9
MOCT33-10-A 10
MOCT33-12-A 12
MOCT33-14-A 14
MOCT33-16-A 16
MOCT41-10-A 10 41.3 18.0 50.8 18.0 M4
MOCT41-12-A 12
MOCT41-14-A 14
MOCT41-16-A 16
MOCT41-17-A 17
MOCT41-19-A 19
MOCT41-20-A 20
MOCT51-12-A 12 50.8  20.8 59.7 20.8 M5
MOCT51-14-A 14
MOCT51-16-A 16
MOCT51-17-A 17
MOCT51-19-A 19
MOCT51-20-A 20
MOCT51-25-A 25
MOCT57-14-A 14 57.2  28.7 78.7 28.7 M6
MOCT57-16-A 16
MOCT57-17-A 17
MOCT57-19-A 19
MOCT57-20-A 20
MOCT57-25-A 25
MOCT57-30-A 30

DISKS

  Click part number for 3D CAD file
Part Number OD (mm) Material Rated Torque
(Nm)		 Torsional
Stiffness
(Deg/Nm)		 Static Break
Torque
(Nm)		 MISALIGNMENT
Angular (Deg) Parallel (mm) Axial Motion (mm)
OD8/13-AT 12.7 Acetal 0.68 0.636 3.9
0.5 0.10 0.05
OD12/19-AT 19.1 Acetal 2.25 0.380 10.5
0.5 0.20 0.10
OD16/25-AT 25.4 Acetal 4.75 0.291 19.0
0.5 0.20 0.10
OD21/33-AT 33.3 Acetal 8.00 0.079 39.5
0.5 0.20 0.15
OD26/41-AT 41.3 Acetal 14.75 0.068 54.5
0.5 0.25 0.15
OD32/51-AT 50.8 Acetal 28.50 0.044 85.0
0.5 0.25 0.20
OD36/57-AT 57.2 Acetal 42.50 0.027 125.0
0.5 0.25 0.20
OD8/13-NL 12.7 Nylon 0.17 2.560 2.8
0.5 0.10 0.05
OD12/19-NL 19.1 Nylon 0.57 1.240 9.6
0.5 0.20 0.10
OD16/25-NL 25.4 Nylon 1.13 1.110 15.9
0.5 0.20 0.10
OD21/33-NL 33.3 Nylon 2.05 0.460 34.0
0.5 0.20 0.15
OD26/41-NL 41.3 Nylon 3.65 0.330 45.3
0.5 0.25 0.15


Note 1 Hardware is alloy steel with black oxide finish.
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.
Note 4 Torque ratings for the couplings are based on the physical limitations/failure point of the torque disks. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the disks. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the rated torque of the disks. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance.

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