Shaft Retention Collar


Part Number: 07-SRC-034

Dimension Chart
Shaft Retention Collar Size Chart
 Part Number Shaft Diameter Outside Diameter Collar Width
07-SRC-034 3/4" 1-1/2" 1/2"
07-SRC-100 1" 1-3/4" 1/2"
07-SRC-118 1-1/8" 1-7/8" 1/2"
07-SRC-114 1-1/4" 2-1/16" 1/2"
07-SRC-138 1-3/8" 2-1/4" 9/16"
07-SRC-112 1-1/2" 2-3/8" 9/16"
07-SRC-134 1-3/4" 2-3/4" 11/16"
07-SRC-200 2" 3" 11/16"
07-SRC-214 2-1/4" 3-1/4" 3/4"
07-SRC-212 2-1/2" 3-3/4" 3/4"
07-SRC-300 3" 4-1/4" 7/8"
 Part Number Shaft Diameter Outside Diameter Collar Width
07-SRC-25M 25mm 45mm 15mm
07-SRC-30M 30mm 54mm 15mm
07-SRC-35M 35mm 57mm 15mm
07-SRC-40M 40mm 60mm 15mm
07-SRC-45M 45mm 73mm 19mm
07-SRC-50M 50mm 78mm 19mm
07-SRC-55M 55mm 82mm 19mm
07-SRC-60M 60mm 88mm 19mm
07-SRC-65M 65mm 93mm 19mm
07-SRC-70M 70mm 98mm 19mm
07-SRC-75M 75mm 103mm 19mm
07-SRC-80M 80mm 108mm 19mm

We have all heard horror stories of boats sinking when a coupling breaks and the shaft is ripped out of the boat. PYI has a simple solution to assist in keeping the shaft in the boat.

The PYI Shaft Retention Collar is designed to help retain the Propeller or Rudder shaft in your vessel in the event of catastrophic failure of the coupling or if the shaft comes free from the coupling. The double split design provides the maximum in axial holding power with the benefit of quick and efficient assembly with the shaft installed.

Design fully engages the shaft without marring. Easily installed where major disassembly would otherwise be required. Greater axial holding power than set screw or one-piece clamping collars. Effective on hard and soft shafts.

Very simple to retrofit to existing prop shafts and rudder shafts. A cost effective and quick solution that could save thousands.

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- Designed to protect Propeller and Rudder shafts

- Assists in keeping the shaft and rudder in the boat in the event of a coupling failure

- Easy installation with the shaft or rudder in place

- Available in sizes to fit shafts from 3/4” to 3” or 25mm to 80mm

- Simple design

Customer Reviews

Based on 8 reviews
As always, great service

You folks always provide great service - it's nice to deal with your company!


Everything was as it should be, 2nd or third time I have ordered from PYI & I
have had no problems of any kind.

This should be standard on all seals, not just pro models

I have a PSS Type A seal on my three year old boat. Recently, after running for about 30 minutes, my bilge alarm went off. Opening the engine room hatch, I found the engine room flooded. Searching for the leak, I found that the dripless shaft seal was letting water in, lots of water, especially when powered up. With the engine in neutral, the bilge pumps were able to bring the water level down and I was able to avoid disaster. The set screws had loosened and the shaft rotor had slid forward allowing water in. Seems that there should be something more than a couple set screws on a spinning, vibrating piece of machinery to keep your boat from sinking. This collar should provide needed backup and should be standard equipment on all seals, not just the pro models.

Great Shaft Collar

Normally, a shaft collar is nothing to get too exited about. When we first put out Rescue Minor into service, we put a steel collar on the rudder shaft. The rudder shaft seal was damaged and water was getting into the boat and soaking the collar. I had to cut the collar off the shaft when we replaced the seal. I found the stainless shaft collar on PYI and ordered it. The collar arrived a couple days later and it was a perfect fit on the 3/4" shaft! The right part, promptly! Way to go PYI!


Out of stock when ordered and shipped promptly when available with
credit given for shipping due to delay. Customer satisfaction!

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Want 15% OFF?

Save 15% OFF on any R&D Flexible Coupling when you purchase any PSS Shaft Seal product! Offer not valid with other discounts.

* Valid 2/26/2019 through 5/31/2019