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Jaw Coupling Hubs
This section will allow you to select hubs to be used individually or as part of an assembly. Ruland jaw coupling hubs undergo a proprietary machining process to produce a curved jaw profile that press fits with the spider, assuring zero-backlash operation. The curved jaw profile concentrates the forces to the center of the spider’s limbs, improving the effectiveness of the elastomer material. Jaw couplings are considered fail safe because if the spider were to fail, the jaws of the two hubs interlock for direct power transmission, allowing the application to be safely shut down for maintenance.
Features Zero backlash
Balanced design
Replaceable spider
RoHS3 and REACH Compliant
Maximum speed: 8,000 RPM
Bore tolerance:
+.001"/-.000"
+.03mm/-.00mm
Temperature Range:
-10°F to 180°F
-23°C to 82°C
Material
Aluminum hubs are standard
Stainless steel hubs are available upon request
How to Order Complete Coupling: Jaw couplings are an assembly of two hubs and one spider
Hubs: Choose two hubs in inch or metric in any style with the same outside diameter
Spider: Choose spider to match performance criteria. The spider must have the same outside diameter as both hubs.
Each hub and spider is sold separately
Products
Download CAD File:
MJC33-16-A
MJC33-16-A
As low as
$27.18
$39.86
Ruland MJC33-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style, 33.3mm OD, 15.0mm Length
Download CAD File:
MJC41-16-A
MJC41-16-A
As low as
$34.09
$50.00
Ruland MJC41-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style, 41.3mm OD, 18.0mm Length
Download CAD File:
MJC41-20-A
MJC41-20-A
As low as
$34.09
$50.00
Ruland MJC41-20-A, 20mm Jaw Coupling Hub, Aluminum, Clamp Style, 41.3mm OD, 18.0mm Length
Download CAD File:
MJC51-16-A
MJC51-16-A
As low as
$55.62
$81.58
Ruland MJC51-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style, 50.8mm OD, 20.8mm Length
Download CAD File:
MJC51-20-A
MJC51-20-A
As low as
$55.62
$81.58
Ruland MJC51-20-A, 20mm Jaw Coupling Hub, Aluminum, Clamp Style, 50.8mm OD, 20.8mm Length
Download CAD File:
MJC57-16-A
MJC57-16-A
As low as
$74.61
$109.43
Ruland MJC57-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style, 57.2mm OD, 28.7mm Length
Download CAD File:
MJC57-20-A
MJC57-20-A
As low as
$74.61
$109.43
Ruland MJC57-20-A, 20mm Jaw Coupling Hub, Aluminum, Clamp Style, 57.2mm OD, 28.7mm Length
Download CAD File:
MJCC33-16-A
MJCC33-16-A
As low as
$34.06
$49.95
Ruland MJCC33-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 33.3mm OD, 15.0mm Length
Download CAD File:
MJCC41-16-A
MJCC41-16-A
As low as
$42.65
$62.55
Ruland MJCC41-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 41.3mm OD, 18.0mm Length
Download CAD File:
MJCC41-20-A
MJCC41-20-A
As low as
$42.65
$62.55
Ruland MJCC41-20-A, 20mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 41.3mm OD, 18.0mm Length
Download CAD File:
MJCC51-16-A
MJCC51-16-A
As low as
$66.08
$96.91
Ruland MJCC51-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 50.8mm OD, 20.8mm Length
Download CAD File:
MJCC51-20-A
MJCC51-20-A
As low as
$66.08
$96.91
Ruland MJCC51-20-A, 20mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 50.8mm OD, 20.8mm Length
Download CAD File:
MJCC57-16-A
MJCC57-16-A
As low as
$87.18
$127.87
Ruland MJCC57-16-A, 16mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 57.2mm OD, 28.7mm Length
Download CAD File:
MJCC57-20-A
MJCC57-20-A
As low as
$87.18
$127.87
Ruland MJCC57-20-A, 20mm Jaw Coupling Hub, Aluminum, Clamp Style With Keyway, 57.2mm OD, 28.7mm Length
Download CAD File:
MJS33-16-A
MJS33-16-A
As low as
$23.58
$34.58
Ruland MJS33-16-A, 16mm Jaw Coupling Hub, Aluminum, Set Screw Style, 33.3mm OD, 15.0mm Length
Download CAD File:
MJS41-16-A
MJS41-16-A
As low as
$27.89
$40.90
Ruland MJS41-16-A, 16mm Jaw Coupling Hub, Aluminum, Set Screw Style, 41.3mm OD, 18.0mm Length
Download CAD File:
MJS41-20-A
MJS41-20-A
As low as
$27.89
$40.90
Ruland MJS41-20-A, 20mm Jaw Coupling Hub, Aluminum, Set Screw Style, 41.3mm OD, 18.0mm Length
Download CAD File:
MJS51-16-A
MJS51-16-A
As low as
$48.06
$70.48
Ruland MJS51-16-A, 16mm Jaw Coupling Hub, Aluminum, Set Screw Style, 50.8mm OD, 20.8mm Length
Download CAD File:
MJS51-20-A
MJS51-20-A
As low as
$48.06
$70.48
Ruland MJS51-20-A, 20mm Jaw Coupling Hub, Aluminum, Set Screw Style, 50.8mm OD, 20.8mm Length
Download CAD File:
MJS57-16-A
MJS57-16-A
As low as
$67.78
$99.42
Ruland MJS57-16-A, 16mm Jaw Coupling Hub, Aluminum, Set Screw Style, 57.2mm OD, 28.7mm Length
Download CAD File:
MJS57-20-A
MJS57-20-A
As low as
$67.78
$99.42
Ruland MJS57-20-A, 20mm Jaw Coupling Hub, Aluminum, Set Screw Style, 57.2mm OD, 28.7mm Length
Download CAD File:
MJSC33-16-A
MJSC33-16-A
As low as
$30.49
$44.72
Ruland MJSC33-16-A, 16mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 33.3mm OD, 15.0mm Length
Download CAD File:
MJSC41-16-A
MJSC41-16-A
As low as
$36.48
$53.51
Ruland MJSC41-16-A, 16mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 41.3mm OD, 18.0mm Length
Download CAD File:
MJSC41-20-A
MJSC41-20-A
As low as
$36.48
$53.51
Ruland MJSC41-20-A, 20mm Jaw Coupling Hub, Aluminum, Set Screw Style With Keyway, 41.3mm OD, 18.0mm Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
MJC33-16-A
16 mm
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
MJC41-16-A
16 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJC41-20-A
20 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJC51-16-A
16 mm
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
MJC51-20-A
20 mm
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
MJC57-16-A
16 mm
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
MJC57-20-A
20 mm
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
MJCC33-16-A
16 mm
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
MJCC41-16-A
16 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJCC41-20-A
20 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJCC51-16-A
16 mm
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
MJCC51-20-A
20 mm
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
MJCC57-16-A
16 mm
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
MJCC57-20-A
20 mm
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
MJS33-16-A
16 mm
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
MJS41-16-A
16 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJS41-20-A
20 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJS51-16-A
16 mm
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
MJS51-20-A
20 mm
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
MJS57-16-A
16 mm
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
MJS57-20-A
20 mm
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
MJSC33-16-A
16 mm
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
MJSC41-16-A
16 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
MJSC41-20-A
20 mm
2.086 in (53.0 mm)
Aluminum
1.625 in (41.3 mm)
8,000 RPM
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20 mm
Bore (B1)
16 mm
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