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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:
JS10-2-A
JS10-2-A
As low as
$11.34
$16.64
Ruland JS10-2-A, 1/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.590" OD, 0.300" Length
Download CAD File:
JS10-3-A
JS10-3-A
As low as
$11.34
$16.64
Ruland JS10-3-A, 3/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.590" OD, 0.300" Length
Download CAD File:
JS10-4-A
JS10-4-A
As low as
$11.34
$16.64
Ruland JS10-4-A, 1/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.590" OD, 0.300" Length
Download CAD File:
JS12-3-A
JS12-3-A
As low as
$12.75
$18.70
Ruland JS12-3-A, 3/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.750" OD, 0.385" Length
Download CAD File:
JS12-4-A
JS12-4-A
As low as
$12.75
$18.70
Ruland JS12-4-A, 1/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.750" OD, 0.385" Length
Download CAD File:
JS12-5-A
JS12-5-A
As low as
$12.75
$18.70
Ruland JS12-5-A, 5/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 0.750" OD, 0.385" Length
Download CAD File:
JS16-4-A
JS16-4-A
As low as
$16.27
$23.86
Ruland JS16-4-A, 1/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
JS16-5-A
JS16-5-A
As low as
$16.27
$23.86
Ruland JS16-5-A, 5/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
JS16-6-A
JS16-6-A
As low as
$16.27
$23.86
Ruland JS16-6-A, 3/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
JS16-8-A
JS16-8-A
As low as
$16.27
$23.86
Ruland JS16-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.000" OD, 0.467" Length
Download CAD File:
JS21-10-A
JS21-10-A
As low as
$23.58
$34.58
Ruland JS21-10-A, 5/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
JS21-5-A
JS21-5-A
As low as
$23.58
$34.58
Ruland JS21-5-A, 5/16" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
JS21-6-A
JS21-6-A
As low as
$23.58
$34.58
Ruland JS21-6-A, 3/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
JS21-8-A
JS21-8-A
As low as
$23.58
$34.58
Ruland JS21-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.313" OD, 0.590" Length
Download CAD File:
JS26-10-A
JS26-10-A
As low as
$27.89
$40.90
Ruland JS26-10-A, 5/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
JS26-12-A
JS26-12-A
As low as
$27.89
$40.90
Ruland JS26-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
JS26-6-A
JS26-6-A
As low as
$27.89
$40.90
Ruland JS26-6-A, 3/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
JS26-8-A
JS26-8-A
As low as
$27.89
$40.90
Ruland JS26-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style, 1.625" OD, 0.710" Length
Download CAD File:
JS32-10-A
JS32-10-A
As low as
$48.06
$70.48
Ruland JS32-10-A, 5/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.000" OD, 0.820" Length
Download CAD File:
JS32-12-A
JS32-12-A
As low as
$48.06
$70.48
Ruland JS32-12-A, 3/4" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.000" OD, 0.820" Length
Download CAD File:
JS32-14-A
JS32-14-A
As low as
$48.06
$70.48
Ruland JS32-14-A, 7/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.000" OD, 0.820" Length
Download CAD File:
JS32-16-A
JS32-16-A
As low as
$48.06
$70.48
Ruland JS32-16-A, 1" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.000" OD, 0.820" Length
Download CAD File:
JS32-8-A
JS32-8-A
As low as
$48.06
$70.48
Ruland JS32-8-A, 1/2" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.000" OD, 0.820" Length
Download CAD File:
JS36-10-A
JS36-10-A
As low as
$67.78
$99.42
Ruland JS36-10-A, 5/8" Jaw Coupling Hub, Aluminum, Set Screw Style, 2.250" OD, 1.130" Length
Part number
Bore (B1)
Small Bore (B2)
Length (L)
Material
Outer Diameter (OD)
Maximum Speed
JS10-2-A
0.1250 in
0.860 in (21.8 mm)
Aluminum
0.590 in (15.0 mm)
8,000 RPM
JS10-3-A
0.1875 in
0.860 in (21.8 mm)
Aluminum
0.590 in (15.0 mm)
8,000 RPM
JS10-4-A
0.2500 in
0.860 in (21.8 mm)
Aluminum
0.590 in (15.0 mm)
8,000 RPM
JS12-3-A
0.1875 in
1.070 in (27.2 mm)
Aluminum
0.750 in (19.1 mm)
8,000 RPM
JS12-4-A
0.2500 in
1.070 in (27.2 mm)
Aluminum
0.750 in (19.1 mm)
8,000 RPM
JS12-5-A
0.3125 in
1.070 in (27.2 mm)
Aluminum
0.750 in (19.1 mm)
8,000 RPM
JS16-4-A
0.2500 in
1.390 in (35.3 mm)
Aluminum
1.000 in (25.4 mm)
8,000 RPM
JS16-5-A
0.3125 in
1.390 in (35.3 mm)
Aluminum
1.000 in (25.4 mm)
8,000 RPM
JS16-6-A
0.3750 in
1.390 in (35.3 mm)
Aluminum
1.000 in (25.4 mm)
8,000 RPM
JS16-8-A
0.5000 in
1.390 in (35.3 mm)
Aluminum
1.000 in (25.4 mm)
8,000 RPM
JS21-10-A
0.6250 in
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
JS21-5-A
0.3125 in
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
JS21-6-A
0.3750 in
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
JS21-8-A
0.5000 in
1.750 in (44.5 mm)
Aluminum
1.313 in (33.3 mm)
8,000 RPM
JS26-10-A
0.6250 in
2.086 in
Aluminum
1.625 in (41.3 mm)
8,000 RPM
JS26-12-A
0.7500 in
2.086 in
Aluminum
1.625 in (41.3 mm)
8,000 RPM
JS26-6-A
0.3750 in
2.086 in
Aluminum
1.625 in (41.3 mm)
8,000 RPM
JS26-8-A
0.5000 in
2.086 in
Aluminum
1.625 in (41.3 mm)
8,000 RPM
JS32-10-A
0.6250 in
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
JS32-12-A
0.7500 in
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
JS32-14-A
0.8750 in
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
JS32-16-A
1.0000 in
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
JS32-8-A
0.5000 in
2.400 in (61.0 mm)
Aluminum
2.000 in (50.8 mm)
8,000 RPM
JS36-10-A
0.6250 in
3.150 in (80.0 mm)
Aluminum
2.250 in (57.2 mm)
8,000 RPM
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