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MJS57-28-A

$147.37 ea
Quantity Price (USD)
1 $147.37 ea
10 $110.53 ea
25 $82.53 ea
50 $49.55 ea
100 Request Quote
In Production Lead Time: 0-2 Days
Ruland MJS57-28-A, 28mm Jaw Coupling Hub, Aluminum, Set Screw Style, 57.2mm OD, 28.7mm Length

PRODUCT SPECIFICATIONS

Ruland MJS57-28-A is a zero-backlash jaw coupling hub with a 28mm bore, 57.2mm OD, and 28.7mm length. It is a component in a three-piece design consisiting of two aluminum hubs and an elastomeric insert called the spider creating a lightweight low inertia coupling capable of speeds up to 8,000 RPM. This three-piece design allows for a highly customizable coupling that easily combines clamp or set screw hubs with inch, metric, keyed, and keyless bores. Spiders are available in three durometers allowing the user to tailor the performance of the coupling to their application. Ruland jaw couplings have a balanced design for reduced vibration at high speeds. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. MJS57-28-A is machined from bar stock that is sourced exclusively from North American mills and is RoHS2 and REACH compliant. It is manufactured in our Marlborough, MA factory under strict controls using proprietary processes.

PRODUCT SPECIFICATIONS

Dimensions

Bore B

28 mm

B1 Shaft Penetration

28.7 mm

Outer Diameter OD

57.2 mm

Bore Tolerance

+.03 mm / -.00 mm

Hub Width LH

28.7 mm

Length L

80.0 mm

Fastening Hardware

Forged Set Screw

M8

Number of Screws

2 ea 90° apart

Screw Material

Alloy Steel

Screw Finish

Black Oxide

Hex Wrench Size

4.0 mm

Seating Torque

17 Nm

Performance Specifications

Maximum Speed

8,000 RPM

Additional Information

Weight (lbs.)

0.4900

Temperature

-10°F to 180°F
-23°C to 82°C

Material Specification

2024-T351 Aluminum Bar

Finish

Bright

Finish Specification

Bright

Manufacturer

Ruland Manufacturing

UPC

63452920795

Country of Origin

USA

Product Notes

Note 1

Stainless steel hubs are available upon request.

Note 2

Performance ratings are for guidance only. The user must determine suitability for a particular application.

Note 3

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

Prop 65

WARNING This product can expose you to the chemical Ethylene Thiourea, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

CERTIFICATIONS/STANDARDS
ISO 9001:2015

Certified

Conflict Minerals

Compliant

RoHS3

Compliant

REACH

Compliant

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