Adapter sleeves
Adapter sleeves are split sleeves used to mount tapered-bore rolling bearings on cylindrical or stepped shafts at any position. The outer surface is tapered and the inner surface is cylindrical. The sleeve is inserted into the tapered bore of the bearing, and tightening the lock nut compresses the sleeve, clamping it onto the shaft and fixing the bearing and shaft together. Washers or locking tabs are used to prevent the nut from loosening. Metric and inch series are available. Large-diameter types include oil-injection compatible products, which are installed hydraulically, and keyless types. They are combined with self-aligning roller bearings or self-aligning ball bearings in housings such as plummer blocks and are used to mount bearings in fans, conveyors and large rotating machinery.
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Adapter sleeves
Metric Series Adapter Sleeve for Shafts (H, HA, HE, OH, AH, KH, etc.)
Metric adapter sleeve for shaft diameters of 17 to 1060 mm. Used with lock nuts to secure bearings.
SKF
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Adapter sleeves
Inch-Series Shaft Adapter Sleeve (HE・HA Series)
An adapter sleeve for securing roller bearings to inch-series shafts. Used in combination with a lock nut and fixing device. Applicable shaft diameters are approximately 3/4 inch to 3 3/16 inch.
SKF
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Adapter sleeves
Inch-Dimension Adapter Sleeve (SNW/SNP Series)
Adapter sleeve for shafts in inch dimensions. Secures bearings with a threaded sleeve and lock nut. Shaft diameters range from 3/4 inch to 19 1/2 inch.
SKF
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Adapter sleeves
Adapter Sleeve
A sleeve for positioning tapered bore bearings on the cylindrical seating surface of a cylindrical or stepped shaft. Available in metric and inch series, with a lock nut and fixing devices supplied as a complete set.
SKF
How to choose Adapter sleeves
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1. Select the bore to suit the shaft diameter
Select the sleeve bore to match the diameter of the mounting shaft. The listed products cover shaft diameters of 17 to 1060 mm. Metric and inch dimension systems differ, so first confirm the unit of the shaft nominal dimension and select a model number from the same system.
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2. Match the bearing bore and taper ratio
The sleeve outer diameter corresponds to the tapered bore diameter of the bearing, and the listed products range from 25 to 530 mm. Two taper ratios are available, 1:12 and 1:30, and common bearings use 1:12. Correct contact requires the same taper ratio as the bearing tapered bore, so check against the bearing model number.
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3. Check the thread designation of the nut
The thread designation of the lock nut used for tightening determines the compatibility of the nut and hydraulic nut. Thread standards may change between large and small sizes, so check the thread standard column for bores below 200 mm and for bores of 200 mm and above separately.
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4. Check shaft tolerance and cylindricity
Adapter sleeves can be used on shafts without precision fit machining, so a relatively wide shaft tolerance is recommended on the shaft side. Poor cylindricity, however, causes uneven clamping and non-uniform internal clearance and fixing force in the bearing. Finish the shaft to the recommended shaft tolerance and cylindricity specification.
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5. Check dimension standards and accessory configuration
Interchangeability is determined by the dimensional standard followed, such as ISO or ABMA. Check the model number codes for differences between series, including whether a lock nut and washer are supplied as a set, whether the type is keyless, and whether it is oil-injection compatible.
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6. Consider mass and mounting method for large sizes
The listed products range widely in mass, from 36 to 1012 kg, so lifting equipment is required for large sizes. Large-diameter bearings are difficult to tighten by hand, so select a compatible hydraulic nut for mounting and removal by hydraulic nut or oil-injection method.
This guide was written by AI based on the listed products' documents and specification items. Check each manufacturer's documents before adopting.