Adapter sleeves are using for locating bearings with a tapered bore onto a cylindrical seating as they can be used on smooth or stepped shafts. They are easy to mount and require no additional location on the shaft. When adapter sleeves are used on smooth shafts, the bearing can be located at any position on the shaft. When used on stepped shafts, together with an abutment ring, bearings can be accurately positioned axially and bearing dismounting is also facilitated

Basic design
ADP adapter sleeves are supplied complete with lock nut and locking device. Smaller sizes use a lock nut with a locking washer, larger sizes use a nut with locking clip. The sleeves are slotted and have an external taper of 1:12. ADP supplies–metric adapter sleeves, series designations H and OH–metric adapter sleeves for shafts with inch dimensions, series designations HA, HE and HS–adapter sleeves with inch dimensions, series designations SNW and SNP
Materials
The materials using in ADP adapter sleeves are carbon steel with a tensile strength at least 430N /mm²,
Dimensions
The dimensions of metric ADP adapter sleeves are in accordance with ISO 2982-1:1995; except the bore diameter of metric sleeves for inch shafts.The dimensions of ADP adapter sleeves with inch dimensions are in accordance with ANSI/ABMA Std. 8.2-1991.
Tolerances
The bore diameter of metric ADP adapter sleeves is to tolerance JS9, the width to h15.The tolerances of ADP adapter sleeves with inch dimensions are in accordance with ANSI/ABMA Std. 8.2-1991.
Thread
Metric ADP adapter sleeves up to size 40 have metric threads with 6g tolerances, according to ISO 965-3:1998. Larger adapter sleeves have metric trapezoidal threads with 7e tolerances, according to ISO 2903:1993.ADP adapter sleeves with inch dimensions up to and including size 64 (12 inch shaft diameter) have Unified Special Form threads (based on the old American National form, class 3 design). Larger sleeves have Acme Class 3G, General Purpose threads.

Shaft tolerances
Generally, the form tolerances must be kept within narrow limits as the accuracy of form directly affects the running accuracy of the bearing. shafts should be to an h9 tolerance but the cylindricity should be to IT5/2 according to ISO 1101:2004.
Model:  HE211 HE212 HE213 HE215 HE216 HE217 HE218 HE219
            HE311 HE312 HE313 HE315 HE316 HE317 HE318 HE319
            HE2311 HE2312 HE2313 HE2315 HE2316 HE2317 HE2318 HE2319
            HS211 HS212 HS213 HS215 HS216 HS217 HS218 HS219 
            HS311 HS312 HS313 HS315 HS316 HS317 HS318 HS319
            HS2311 HS2312 HS2313 HS2315 HS2316 HS2317 HS2318 HS2319
            HA211 HA212 HA213 HA215 HA216 HA217 HA218 HA219
            HA311 HA312 HA313 HA315 HA316 HA317 HA318 HA319
            HA2311 HA2312 HA2313 HA2315 HA2316 HA2317 HA2318 HA2319