Belt Drive Accessories
Morse MR300A 3/4FB CL
M SERIES CLUTCH
This part has been discontinued.
Contact us for an alternative.
Product Type
M Series
Overall Diameter (in)
3 in
Rated Torque Capacity (ft.-lbs.)
275
RPM Max. - Inner Race
800
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- Morse Mechanical Clutches offer the most complete and versatile selection of backstop, overriding, and index Clutches in the industry
- The M series ball bearing clutch contain precision formed cams made from high quality steel and precision ground. Our most versatile clutch, this unit is the workhorse of the industry
- MR is for high- speed outer race overruning. Incorporating a unique cam construction that uses centrifugal force to minimize cam drag
- Overall Diameter (in)
- 3 in
- Rated Torque Capacity (ft.-lbs.)
- 275
- RPM Max. - Inner Race
- 800
- Model
- MR
- Inner Race Width (in)
- 2.5 in
- Product Type
- M Series
- RPM Max. - Outer Race
- 2900
- Clutch size code
- 300
- Mode of Operation
- High Speed outer race overrunning
- Outer Width (in)
- 2.375 in
- Type
- CAM Clutches
- Add'l Bearing Support Requirement
- No
- Lubrication Type
- Oil
- Backstopping Clutch
- Yes
- Bore (Min) (in)
- 0.5 in
- Bore (Max) (in)
- 0.75 in
- Indexing Clutch
- Yes
- Bore Size (in)
- 0.75 inShaft size chart
- Overrunning Clutch
- Yes
- Nominal Overrunning Drag (ft-lb)
- 0.17
- RPM Max. -inner Race
- 800
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Morse
- Mfg. Catalog Numberi
- MR300A 3/4FB CL
- Mfg. Part Numberi
- 638904
- GDS #i
- GDS-115210
- Categoryi
- Belt Drive Accessories
- UPCi
- 662288501060
- Country of Origini
- Mexico
Common Questions
Has the Morse MR300A 3/4FB CL been discontinued?
Yes. Morse has discontinued the MR300A 3/4FB CL. Contact us for cross-reference help finding a suitable replacement.
Are volume discounts available for the MR300A 3/4FB CL?
Yes. Published volume pricing for this part is shown in the volume pricing section on this page, and larger quantities can be quoted through a volume pricing request.
Is this a genuine Morse part?
Yes. GDS Supply supplies the genuine Morse MR300A 3/4FB CL, manufacturer article number 638904. Its UPC is 662288501060.
