FYH Imperial adapter sleeves, 1"

FYH HE300 series is an imperial adapter sleeve (also spelt adaptor sleeve) for mounting a tapered bore bearing on a plain inch shaft. Choose the size from the Bore (inch) drop-down.

For the same shaft size and lock nut, the HE300 series sleeve is shorter than the HE2300 series: the HE306 has an overall length (B1) of 31mm against 38mm for the HE2306, and the HE318 is 65mm against 86mm for the HE2318. Each adapter is a slotted sleeve with a lock nut and a lock washer. The bearing and the adapter are separate items, so order both.

Where this product is used

• Mounting a tapered bore bearing on a plain (cylindrical) shaft
• Fitting a tapered bore bearing to a given shaft diameter: the sleeve bore sets the shaft size
• Equipment exposed to vibration or impact, where adapter fixing of the bearing is used

Features

• Slotted adapter sleeve with a lock nut and a lock washer: the washer tab engages the sleeve slot and one tab is bent into a slot in the nut to lock it
• Tapered bore with adapter gives 360-degree shaft contact along the whole length of the bearing inner ring
• A looser shaft fit is allowed with an adapter sleeve: h8 or h9 shaft tolerance is recommended
• Overall length, lock nut size, lock nut and washer numbers and mass are given for the sizes in the table

Key specifications

Fitting and use

Shaft: check the shaft for bends, burrs and other flaws before fitting. A looser shaft fit is allowable with an adapter sleeve: the recommended shaft tolerance is h8 or h9.

Fitting: slide the adapter sleeve onto the shaft at the bearing position; if it is too tight, open the slot with a screwdriver. Slide the bearing onto the sleeve, place a cylindrical reinforcing ring against the front face of the inner ring, and seat the sleeve by tapping lightly around its back. Fit the lock washer with its tab in the sleeve slot, then screw the lock nut on by hand with the tapered side facing the bearing.

Tightening: a lock nut that is too loose lets the sleeve slip, which wears the shaft and the bearing. A lock nut that is too tight expands the inner ring and reduces the internal clearance, which can cause overheating and early failure.

Choosing the right option

Choose by shaft diameter and by the sleeve number your bearing needs. HE300 sleeves are shorter than the HE2300 series for the same shaft size, so they suit bearings specified for the shorter sleeve.

HE318 and HE319 both have a 3-1/4" bore: choose by model number.

See also: H200, H300, H2300, H3000.