MBCK51-22-18-A

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Ruland MBCK51-22-18-A, 22mm x 18mm Bellows Coupling, Aluminum, Clamp Style With Keyway, 50.8mm OD, 58.7mm Length

PRODUCT SPECIFICATIONS

Ruland MBCK51-22-18-A is a bellows coupling with 22mm x 18mm bores, 50.8mm OD, 58.7mm length, and 6mm x 6mm keyways. It is zero-backlash and has a balanced design for reduced vibration at high speeds. MBCK51-22-18-A is comprised of two anodized aluminum hubs and a stainless steel bellows. The bellows are able to flex while remaining rigid under torsional loads allowing for all types of misalignment to be accommodated. This bellows coupling is lightweight and has low inertia making it suitable for applications with speeds up to 10,000 RPM. Hardware is metric and tests beyond DIN 912 12.9 standards for maximum torque capabilities. Ruland manufactures MBCK51-22-18-A to be torsionally rigid and an excellent fit for precise positioning stepper servo applications as well as encoders. It is machined from solid bar stock that is sourced exclusively from North American mills and RoHS2 and REACH compliant. MBCK51-22-18-A is carefully manufactured in our Marlborough, MA factory under strict controls using proprietary processes.

PRODUCT SPECIFICATIONS

Dimensions

Large Bore B1

22 mm

Small Bore B2

18 mm

Keyway K

6 mm

Keyway K2

6 mm

B1 Shaft Penetration

27.9 mm

B2 Shaft Penetration

27.9 mm

Outer Diameter OD

50.8 mm

Bore Tolerance

+.03 mm / -.00 mm

Length L

58.7 mm

Hub Width LH

20.55 mm

Fastening Hardware

Forged Clamp Screw

M5

Screw Material

Alloy Steel

Hex Wrench Size

4.0 mm

Screw Finish

Black Oxide

Seating Torque

9.5 Nm

Number of Screws

2 ea

Performance Specifications

Static Torque

45.2 Nm

Angular Misalignment

2.0°

Dynamic Torque Non-Reversing

22.60 Nm

Parallel Misalignment

0.25 mm

Dynamic Torque Reversing

11.30 Nm

Axial Motion

0.50 mm

Torsional Stiffness

108 Nm/Deg

Maximum Speed

10,000 RPM

Additional Information

Material Specification

Hubs: 2024-T351 Aluminum Bar
Bellows: Type 321 Stainless Steel

Temperature

-40°F to 200°F
-40°C to 93°C

Finish Specification

Sulfuric Anodized MIL-A-8625 Type II, Class 2 and ASTM B580 Type B Black Anodize

Manufacturer

Ruland Manufacturing

Country of Origin

USA

Weight (lbs.)

0.4400

UPC

63452916802

Product Notes

Note 1

Stainless steel hubs are available upon request.

Note 2

Torque ratings are at maximum misalignment.

Note 3

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

Note 4

Torque ratings for the couplings are based on the physical limitations/failure point of the metal bellows. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the metal bellows. Please consult technical support for more assistance.

Prop 65

WARNING This product can expose you to chemicals including Ethylene Thiourea and Nickel (metallic), known to the State of California to cause cancer, and Bisphenol A and Ethylene Thiourea, known to the State of California to cause 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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