CS AOH 31 Hydraulic Withdrawal Sleeves | Metric Shaft Bearing Mounting Solution
CS professional AOH 31 Hydraulic Withdrawal Sleeves for metric shafts with tapered bore mounting. Featuring oil passages and grooves for pressurized oil injection, these Taiwan-made sleeves facilitate easy installation and dismounting of large bearings. Available in 20 models from AOH3132 to AOH31/500.
AOH 31 Hydraulic Withdrawal Sleeves
AOH 31 Hydraulic Withdrawal Sleeves for metric shafts, for metric spindle. The withdrawal sleeves is one of the more popular and common used industrial sleeves. It can be used to mount bearings dismount with a tapered bore on the cylindrical seat of stepped shafts. Hydraulic bearing sleeves facilitate mounting on large bearings. An oil pump is required to inject pressurized oil. There are oil passages on the threaded side and grooves on the outer surface which can be filled with internal oil according to requirements. It is convenient for installation and the disassembly of components.
Model
AOH3132, AOH3134, AOH3136, AOH3138, AOH3140, AOH3144, AOH3148, AOH3152, AOH3156, AOH3160, AOH3164, AOH3168, AOH3172, AOH3176, AOH3180, AOH3184, AOH3188, AOH3192, AOH3196, AOH31/500
Drawing
AOH 31 Hydraulic Withdrawal Sleeves Drawing
Hydraulic Withdrawal Sleeves - AOH 31
TAPER 1:12
| Hydraulic Withdrawal Sleeves NO. | d1 | L | L | b | Ro | e | t | Thread2) | Appropriate Withdrawal Nut No. | Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| D1 | ||||||||||
| mm | mm | mm | mm | mm | mm | mm | kg | |||
| AOH3132 | 150 | 103 | 108 | 16 | M6 | 4.5 | 8 | M180*3 | AN36 | 3.21 |
| AOH3134 | 160 | 104 | 109 | 16 | M6 | 4.5 | 8 | M190*3 | AN38 | 3.4 |
| AOH3136 | 170 | 116 | 122 | 19 | M6 | 4.5 | 8 | M200*3 | AN40 | 4.22 |
| AOH3138 | 180 | 125 | 131 | 20 | M6 | 4.5 | 8 | Tr210*4 | HN42 | 4.89 |
| AOH3140 | 190 | 134 | 140 | 21 | M6 | 4.5 | 8 | Tr220*4 | HN44 | 5.49 |
| AOH3144 | 200 | 145 | 151 | 23 | G1/8 | 8.5 | 12 | Tr240*4 | HN48 | 10.4 |
| AOH3148 | 220 | 154 | 161 | 25 | G1/8 | 8.5 | 12 | Tr260*4 | HN52 | 12 |
| AOH3152 | 240 | 172 | 179 | 26 | G1/8 | 8.5 | 12 | Tr290*4 | HN58 | 16.2 |
| AOH3156 | 260 | 175 | 183 | 28 | G1/8 | 8.5 | 12 | Tr310*4 | HN62 | 17.5 |
| AOH3160 | 280 | 192 | 200 | 30 | G1/8 | 8.5 | 12 | Tr330*5 | HN66 | 20.8 |
| AOH3164 | 300 | 209 | 217 | 31 | G1/8 | 8.5 | 12 | Tr350*5 | HN70 | 24.5 |
| AOH3168 | 320 | 225 | 234 | 33 | G1/8 | 8.5 | 12 | Tr370*5 | HN74 | 29 |
| AOH3172 | 340 | 229 | 238 | 35 | G1/8 | 8.5 | 12 | Tr400*5 | HN80 | 33 |
| AOH3176 | 360 | 232 | 242 | 36 | G1/8 | 8.5 | 12 | Tr420*5 | HN84 | 35.7 |
| AOH3180 | 380 | 240 | 250 | 38 | G1/8 | 8.5 | 12 | Tr440*5 | HN88 | 39.5 |
| AOH3184 | 400 | 266 | 276 | 40 | G1/8 | 8.5 | 12 | Tr460*5 | HN92 | 46.5 |
| AOH3188 | 420 | 270 | 281 | 42 | G1/8 | 8.5 | 12 | Tr480*5 | HN96 | 49.8 |
| AOH3192 | 440 | 285 | 296 | 43 | G1/8 | 8.5 | 12 | Tr510*6 | HN102 | 57.9 |
| AOH3196 | 460 | 295 | 307 | 45 | G1/8 | 8.5 | 12 | Tr530*6 | HN106 | 63.1 |
| AOH 31/500 | 480 | 313 | 325 | 47 | G1/8 | 8.5 | 12 | Tr550*6 | HN110 | 70.9 |
⊚ Dimension L1 decreases as the Hydraulic withdrawal sleeve is driven in during mounting.
⊚ M means metric thread. Tr means 30°, trapezoid thread and the digits are outside diameter of thread and pitch.
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Spec. of AOH31
Spec. of AOH3132, AOH3134, AOH3136, AOH3138, AOH3140, AOH3144, AOH3148, AOH3152, AOH3156, AOH3160, AOH3164, AOH3168, AOH3172, AOH3176, AOH3180, AOH3184,...
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How Does Pressurized Oil Injection Improve Bearing Installation Efficiency?
The AOH 31 Hydraulic Withdrawal Sleeves utilize a sophisticated oil passage system that distributes pressurized oil between the sleeve and shaft surfaces, creating a thin oil film that temporarily reduces friction by up to 90%. This hydraulic principle allows even large bearings to be mounted with minimal force, preventing damage to components and reducing installation time from hours to minutes. Contact us to learn how this technology can optimize your bearing installation processes and reduce maintenance downtime.
Each AOH 31 sleeve is engineered with a 1:12 taper ratio and includes compatible withdrawal nut specifications for complete system integration. The sleeves' hydraulic functionality eliminates the need for excessive force during bearing maintenance, preventing potential damage to valuable components while extending equipment service life. Ideal for applications in heavy machinery, mining equipment, paper mills, and steel manufacturing facilities, these withdrawal sleeves combine durability with functional design, featuring precision-machined threads (metric and trapezoid) that ensure secure attachment and reliable performance even under demanding industrial conditions.