View Cart  |  My Account
Oldham Couplings Shaft Collar in Shell
grey block
 

MOST/MOSC - Metric Set Screw Oldham Coupling
Metric Set Screw Oldham Coupling MOST-MOSC Line Drawing

Features

  • Large parallel misalignment
  • Electrically isolating
  • Replaceable disk
  • Balanced design
  • Constant velocity
  • Bore tolerance: +.03mm/-.00mm
  • Maximum speed: 4,500 RPM
  • Temperature range (Deg. F)
    with Acetal Disk: -10° to 150°
    with Nylon Disk: -10° to 130°

 

  

How to Order

Complete Coupling: Oldham couplings are an assembly of two hubs and one disk

Hubs: Choose two hubs in inch or metric in any style with the same outside diameter

Disk: Choose disk to match performance criteria. The disk must have the same outside diameter as both hubs.

Each hub and disk is sold separately

Material

  • Aluminum hubs are standard
  • Stainless steel hubs are available upon request

Inch to Metric Bore Combinations

  • Inch and metric hubs with the same outside diameter can be combined into a single coupling
  • For help on inch to metric bore combinations please email


 
Oldham Couplings
Clamp Style Coupling
Set Screw Coupling
- OST/OSC Inch Series
- MOST/MOSC Metric Series
Oldham Coupling Disks
Coupling Support Form
Product Index
 
 
  Oldham Coupling Hubs | Click part number for 3D CAD file and pricing
Part Number Use with
Disk		 Bore
B1 (mm)		 Outer
Diameter
OD (mm)		 Hub
Length
LH (mm)		 Coupling
Length
L (mm)		 Shaft Penetration
(mm)		 Clamp
Screw		 Part Number
with Keyway 		Keyway
(mm)
MOST13-3-A OD8/13 3 12.7 5.6 15.9 5.6 M3 - -
MOST13-4-A 4
MOST13-5-A 5
MOST13-6-A 6
MOST19-4-A OD12/19 4 19.1 7.6 22.2 7.6 M3 - -
 MOST19-5-A 5
 MOST19-6-A 6
 MOST19-8-A 8
MOST25-6-A OD16/25 6 25.4 9.9 28.6 9.9 M4 - -
MOST25-8-A 8 MOSC25-8-A 2
MOST25-9-A 9 - -
MOST25-10-A 10 MOSC25-10-A 3
MOST25-12-A 12 MOSC25-12-A 4
MOST33-8-A OD21/33 8 33.3 15.0 47.6 15.0 M4 MOSC33-8-A 2
 MOST33-10-A  10 MOSC33-10-A 3
MOST33-12-A  12 MOSC33-12-A 4
 MOST33-14-A  14 MOSC33-14-A 5
 MOST33-16-A  16 MOSC33-16-A 5
 MOST41-10-A OD26/41  10 41.3 18.0 50.8 18.0 M5 MOSC41-10-A 3
 MOST41-12-A  12 MOSC41-12-A 4
 MOST41-14-A  14 MOSC41-14-A 5
 MOST41-16-A  16 MOSC41-16-A 5
MOST41-17-A 17 - -
MOST41-19-A 19 - -
MOST41-20-A 20 MOSC41-20-A 6

Oldham Coupling Disks | Click part number for 3D CAD file and pricing
Part Number Material Outside
Diameter		 Torsional
Stiffness
 Rated
Torque 		Static Break
Torque 		MISALIGNMENT
Angular Parallel Axial Motion
in mm
(Deg/lb-in) (Deg/Nm)
(lb-in) (Nm)
(lb-in) (Nm)
(Deg)
in mm
in mm
OD8/13-AT Acetal
0.500 12.7
0.072 0.636
6 0.68
34 3.9
0.5°
0.004 0.10
0.002 0.05
OD12/19-AT Acetal
0.750 19.1
0.043 0.380
20 2.25
93 10.5
0.5°
0.008 0.20
0.004 0.10
OD16/25-AT Acetal
1.000 25.4
0.033 0.291
42 4.75
168 19.0
0.5°
0.008 0.20
0.004 0.10
OD21/33-AT Acetal
1.313 33.3
0.009 0.079
70 8.00
350 39.5
0.5°
0.008 0.20
0.006 0.15
OD26/41-AT Acetal
1.625 41.3
0.008 0.068
130 14.75
480 54.5
0.5°
0.010 0.25
0.006 0.15
OD32/51-AT Acetal
2.000 50.8
0.005 0.044
250 28.50
750 85.0
0.5°
0.010 0.25
0.008 0.20
OD36/57-AT Acetal
2.250 57.2
0.003 0.027
375 42.50
1100 125.0
0.5°
0.010 0.25
0.008 0.20
OD8/13-NL Nylon
0.500 12.7
0.290 2.560
1.5 0.17
25 2.8
0.5°
0.004 0.10
0.002 0.05
OD12/19-NL Nylon
0.750 19.1
0.140 1.240
5 0.57
85 9.6
0.5°
0.008 0.20
0.004 0.10
OD16/25-NL Nylon
1.000 25.4
0.126 1.110
10 1.13
140 15.9
0.5°
0.008 0.20
0.004 0.10
OD21/33-NL Nylon
1.313 33.3
0.052 0.460
18 2.05
300 34.0
0.5°
0.008 0.20
0.006 0.15
OD26/41-NL Nylon
1.625 41.3
0.037 0.330
32 3.65
400 45.3
0.5°
0.010 0.25
0.006 0.15

 

Note 1 Hardware is alloy steel with black oxide finish. Parts MOST13 and MOST19 have one set screw. MOST25, MOST33 and MOST41 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.
Note 4 Torque ratings for the couplings are based on the physical limitations/failure point of the torque 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.

<< Back