Overview

Stens OEM Replacement PTO Clutches for Bunton mowers.

Electric PTO Clutches for Bunton

Electric PTO Clutch
USD $294.81
  • SKU: 255-339
Electric PTO Clutch
USD $377.13
  • SKU: 255-455
Electric PTO Clutch
USD $364.08
  • SKU: 255-535
Electric PTO Clutch
USD $474.01
  • SKU: 255-552
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Prices are in US Dollars.

Overview

Stens OEM Replacement PTO Clutches for Bunton mowers.

Product Description

These Stens OEM Replacement Electric PTO Clutches are for Bunton mowers. They can handle rugged use and are perfect for residential and commercial applications.

For proper ordering of electric PTO clutches, reference the Warner number stamped on the clutch.

Part # Replaces
Bunton OEM
Replaces
Warner #
I.D. Height Pulley
Diameter
Direction Uses
Belt
Width
255-339 2721110 5219-18 1" 3 5/16" 7 5/16" Counter
Clockwise
5/8"
255-455 2722016 5219-14 1 1/8" 3 13/32" 6 5/16" Clockwise 5/8"
255-535 2188151 5218-5
5218-70
5218-259
1 1/8" 3 1/4" 6 5/16" Clockwise 5/8"
255-552 2721337 5218-65
5218-65E
5218-213
1 1/8" 3 5/8" 6 5/16" Clockwise 5/8"

Important:

If a clutch is mounted incorrectly then the springs will be run in compression and it will cause the springs to fail.

Generally, most applications that mount directly to the crankshaft use a counter clockwise rotation for standard mount (pulley away from engine). A clockwise rotation is normally used for reverse mounting (pulley towards engine).

In order for your PTO clutch to be installed properly you must torque correctly to prevent premature failure. You must allow both axial and radial free-play on the anti-rotation device. You must allow this free-play or resistance will be created resulting in field bearing failure.

When mounting bolt and retaining washer and torque for the clutch follow these specs. for it to work properly.

  • Use Grade 5 or Grade 8 bolt only

Minimum Torque:

  • 7/16" UNF bolt is 50ftlb/67 Nm
  • 3/8" UNF bolt is 31ftlb/42 Nm
  • M10x1.5 bolt is 35ftlb/48 Nm

Anything less than required mounting torque could result in clutch failure, thus voiding warranty.

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