Withdrawal Sleeve

withdrawal(Extraction) sleeves can be used to mount bearings with a tapered bore on cylindrical seats of stepped shafts. The sleeve is pressed into the bore of the bearing that abuts a shaft shoulder or similar fixed component. The sleeve is located on the shaft by a nut or an end plate. Lock nuts or endplates are not supplied with the withdrawal sleeves. KM or HM lock nuts and respective locking washers are suitable but must be ordered separately. Further information will be found in the section "Lock nuts with locking washer or clip".

To secure the bearing to the shaft, press the withdrawal sleeve into the bearing bore. To do this, particularly where larger bearings are concerned, considerable force is required to overcome the friction between the mating surfaces of the bearing and sleeve and of the sleeve and shaft. Mounting and dismounting of bearings on withdrawal sleeves can be facilitated considerably by using a hydraulic nut .

Basic design

ADP withdrawal sleeves are slotted and have an external taper of 1:12 except for those in the AH 240 and AH 241 series which have an external taper of 1:30 and are intended for use with wide bearings in the 40 and 41 Dimension Series.

The nuts required for dismounting the withdrawal sleeve are not supplied with the sleeve and must be ordered separately. Appropriate sizes are listed in the product table. Appropriate hydraulic nuts for dismounting are listed there as well.

Materials

The materials using in ADP withdrawal sleeves are carbon steel with a tensile strength at least 430N /mm².

Dimensions

The dimensions of ADP withdrawal sleeves are in accordance with ISO 2982-1:1995.

Tolerances

The bore diameter of ADP withdrawal sleeves is to tolerance JS9, the width to h13.

Thread

ADP withdrawal sleeves up to size 38 have metric threads with 6g tolerances according to ISO 965-3:1998. Larger withdrawal sleeves have metric trapezoidal threads with 7e tolerance according to ISO 2903:1993.

If standard nuts are not used, the threads of nuts for withdrawal sleeves up to size 38 should correspond to tolerance 5H according to ISO 965-3:1998. The threads of nuts for larger withdrawal  sleeves should correspond to tolerance 7H according to ISO 2903:1993.

Shaft tolerances

As withdrawal sleeves adapt themselves to the shaft diameter, wider diameter tolerances can be permitted than for the seating of a bearing with a cylindrical bore. However, the form tolerances must be kept within narrow limits as the accuracy of form directly affects the running accuracy of the bearing. Generally, shafts should be machined to an h9 tolerance but the cylindricity should be to IT5/2 according to ISO 1101:2004.
Model:AH308  AH2308 AH309  AH2309 AHX310  AHX2310 AHX311  AHX2311 AHX312  AHX2312 AH313G  AH2313  AHX2314/60 AH314G AHX2314 
AHX2315/65 AH315G  AHX2315  AH316/70  AHX2316/70 AH316  AHX2316  AHX317/75  AHX2317/75 AHX317  AHX2317  AHX318/80 
AHX2318/80 AHX318  AHX2318  AHX3218  AHX319/85  AHX2319/85 AHX319  AHX2319  AHX320/90  AHX2320/90  AHX320  AHX3120 
AHX3220  AHX2320  AHX2322/100  AHX3122/100  AHX322  AHX2322  AHX3122  AHX3222  AH 24122  AHX2324/110  AHX3124/110 
AHX2324  AHX3024  AHX3124  AHX3224  AH 24024  AH 24124  AHX2326/115  AHX3126/115  AHX2326  AHX3026  AHX3126  AHX3226 
AH 24026  AH 24126  AHX2328/125  AHX3128/125 AHX2328 AHX3028 AHX3128 AHX3228 AH24028 AH24128 AHX2330/135 AHX3130/135
AHX2320 AH2332/140 AH3132/140 AHX3122/100 AHX2330 AHX3030 AHX3130 AHX3230 AH24030 AH24130 AH24122 AH2332 AH3032
AH3132 AH3232 AH24032 AH24132 AH2334/150 AH3134/150 AH24024 AH2334 AH3034 AH3134 AH3234 AH24024 AH24134 AH2236/160
AH2336/160 AH2236 AH2336 AH3036 AH3136 AH3236 AH24036 AH24136 AH2238/170 AH2338/170  AH2238 AH2338 AH3038 AH3138
AH3238 AH24038 AH24138 AH2240/180 AH2340/180  AH2240 AH2340 AH3040 AH3140 AH3240 AH24024 AH24140