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Ruland LV-MCL-12E-SS, 3/4" One-Piece Shaft Collar with Clamping Lever, 303 SS Collar with Zinc Plated Lever, 40mm OD, 15mm Width

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Ruland LV-MCL-12E-SS is a one-piece quick clamping shaft collar with clamping lever with a 0.7500" bore, 40mm OD, and 15mm width. It is made from MCL-12E-SS and LF45-CL-M6:18-ZS. LF45-CL-M6:18-ZS is an international series shaft collar that has an inch bore, metric hardware, and metric dimensions. The clamp style design does not mar the shaft, is easy to remove, and is indefinitely adjustable. The threaded stud on the lever is used in place of standard collar hardware. When combined, the two parts create a shaft collar that requires no tools to install, remove, or reposition and is ideally suited for packaging, printing, and other applications where frequent setup changes and adjustments are needed. Once the lever is installed in the shaft collar, users simply turn the lever until they meet their desired torque. The adjustable lever can be reposition by the user without the loss of holding power by lifting the handle and twisting it 40° to lock it in a new position. This allows for use in space constrained environments where 360° rotation is not possible to fully seat the lever. MCL-12E-SS is made from 303 stainless steel. LF45-CL-M6:18-ZS has a zinc plated steel handle and stainless steel threaded stud. This material combination allows for a durable quick clamping and release component with high corrosion resistance that is suitable for most industrial applications. The lever is black to seamlessly integrate with the aesthetics of most equipment. MCL-12E-SS is manufactured by Ruland and LF45-CL-M6:18-ZS is manufactured by Otto Ganter. LV-MCL-12E-SS is RoHS3 and REACH compliant.



Bore (B1) Larger inner diameter. Should match nominal shaft diameter.

0.7500 in

Bore Tolerance Variance in finished bore range before installation.

+0.0020 in / +0.0005 in

Outer Diameter (OD)

40 mm

Center to Lever Top H1

38.8 mm

Width (W)

15 mm

Width Tolerance

+0.076 mm / -0.254 mm

Lever Length L1

45 mm

Lever Height H2

38.5 mm

Hub Diameter DH

13 mm

Sleeve Length L2

18 mm

Recommended Shaft Tolerance Acceptable variance in nominal shaft diameter before performance loss.

+0.0000 in / -0.0005 in

Fastening Hardware

Thread TH


Hex Wrench Size Wrench size that fits the screw head to tighten or loosen the screw.

5.0 mm

Seating Torque Torque required to install supplied hardware. Use torque wrench for accurate seating torque.

9.6 Nm

Screw Location (R)

14.73 mm

Number of Screws

1 ea

Additional Information

Collar Part Number


Lever Part Number


Collar Material

303 Stainless Steel

Collar Finish


Handle Color


Handle Material


Handle Finish

Powder Coated

Insert and Screw Material

303 Stainless Steel


Ruland Manufacturing

Country of Origin

Shaft Collar - USA
Lever - Germany

Weight (lbs)




Tariff Code


UNSPC Code used to identify products to standardize nomenclature around the world.


Product Notes

Note 1

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

Prop 65 Required for the US State of California only.

WARNING This product can expose you to the chemical Soots, Benzene, Lead, Nickel (metallic), known to the State of California to cause cancer, and Lead and Benzene known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

ISO 9001:2015


Conflict Minerals







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