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GR-1 PTO Slip Clutch, 1-3/8" Smooth Male, 1-3/8" Female

The average rating for this product is 5 out of 5 stars
2 reviews
This smooth PTO slip clutch works to protect the gearbox and to ensure smooth torque levels when connected to the PTO shaft. This slip clutch may be used with a 4, 5 or 6 series shaft.
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Product Overview

Slip clutches can help protect important parts like gearboxes on agricultural machinery. This slip clutch can connect to your 4, 5 or 6 series PTO shaft. The female end on this PTO slip clutch also measures a length of 1-3/8 inches. The overall length is 7-1/4 inches.


  • Slip Clutch
  • Male end: 1-3/8 inches smooth
  • Female end: 1-3/8 inches smooth
  • 8 bolt hub assembly
  • For: 4, 5 or 6 series PTO shafts
  • Length: 7-1/4 inches
  • Overall diameter is 7.09 inches
  • Slipping torque: 7970 in. lbs.
  • For replacement disc use 102249 - Friction Disc for 2 Disc Clutch

View our selection of PTO Shaft Assemblies offered here at Agri Supply®.

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Product Review Summary
Based on 2 reviews
The average rating for this product is 5 out of 5 stars
Overall Rating: 5.0/5.0
Customer Reviews
August 06, 2021
Huge upgrade from sheer bolts
This shopper rated the product 5 out of 5 stars

I run a 5' rotary cutter rated for 45 hp on two different tractors. The smaller one is 31 hp and generally just bogs down when cutting heavier brush, leaving the sheer bolts in tact. With the 68 hp tractor it will sheer the bolts all day long. This clutch protects the gearbox and saves hours of aggravation from not having to deal with sheer bolts. It paid for itself the first time I used it. Not to mention that it was a 5 minute install and didn't require any modification to the PTO shaft. Highly recommended!

Tom from MS
August 18, 2020
Super simple to install
This shopper rated the product 5 out of 5 stars

I received my slip clutch in a well-padded box, and was immediately able to bolt it to the rotary cutter gear box and PTO shaft. Came with grade 8 bolts to provide a solid connection. One word of caution, be sure to measure your PTO shaft for the correct length after installation. It looks like it adds about 5 1/2" length to the gearbox end. You may need to shorten your PTO shaft. Watch a Youtube video on how to measure and cut properly.

Mike from TN