Withdrawal Sleeves (AOH / AOHX)

Specifications

How to choose Removal sleeves

Points to check when selecting, with the values for this product (Withdrawal Sleeves (AOH / AOHX)).

1. 1. Select inner diameter d1 to match shaft diameter

   This product: Inner diameter d1 260~1060 mm

   The inner diameter d1 is the applicable shaft diameter. Listed products range from 35 to 1060 mm. Also confirm that shaft machining can meet the recommended shaft tolerance and cylindricity. Poor roundness or cylindricity causes uneven interference, which can lead to inner ring cracking or creep (slip rotation).

2. 2. Match outer diameter d to bearing bore

   The outer diameter d is the nominal outer diameter of the tapered section and corresponds to the bore of the bearing to be combined. Even for the same shaft diameter, the outer diameter and width vary by bearing series. Therefore, verify the combination with the bearing to be used against the applicable bearing series and bearing number table when selecting.

3. 3. Match taper ratio to the bearing

   The outer taper ratio of the sleeve must match the tapered bore of the bearing inner ring. Generally it is 1:12, and wide series (such as the 240 and 241 series) use 1:30. A mismatched taper ratio will not clamp correctly and internal clearance cannot be adjusted properly. Check against the suffix of the bearing number (K or K30).

4. 4. Check width B1 and shaft mounting length

   Width B1 is the total width of the sleeve. It equals the bearing width plus the press-in allowance and nut engagement allowance, so confirm it fits within the dimension from the shoulder of the stepped shaft to the shaft end. If it does not fit, the bearing cannot be pushed to its specified position.

5. 5. Match thread size and withdrawal nut

   This product: Nominal thread size Tr 300x4~Tr 1120x8

   During removal, the withdrawal nut is fitted to the thread on the sleeve and used to pull it out. Confirm the thread designation and applicable nut number, and arrange the nut at the same time. Generally, small sizes use metric threads, and large sizes with inner diameter of 190 mm or more use trapezoidal threads.

6. 6. Select hydraulic-removal type for large sizes

   Large bearings have high clamping force, making mechanical extraction difficult. Selecting the H-type model with oil holes and oil grooves (such as AOH) allows pressure oil to be injected to relieve the interference. Combined with a hydraulic nut, it reduces the maintenance workload.

This guide was written by AI based on the listed products' documents and specification items.

About Removal sleeves and all products

Description

Withdrawal sleeve for tapered bore bearings. Features Tr thread and G-type thread connections, and is used in combination with a compatible hydraulic nut. Main dimensions and mass differ by size. For sleeves with a bore diameter exceeding 1060 mm, contact SKF.

FAQ

Q. What are the bore diameters and thread specifications of AOH / AOHX withdrawal sleeves?

A. The bore diameter d1 is 260 to 1060 mm. The thread designations are Tr 300x4 to Tr 1120x8.

Q. How is an AOH / AOHX withdrawal sleeve used?

A. It is a withdrawal sleeve for tapered bore bearings. It is inserted into the bearing bore and used together with a compatible hydraulic nut to remove the bearing.

Q. Can I select an AOH / AOHX withdrawal sleeve with a bore diameter larger than 1060 mm?

A. For sleeves with a bore diameter exceeding 1060 mm, you need to contact SKF.

Q. What applications are AOH / AOHX withdrawal sleeves suitable for?

A. They are used for removing large bearings and for maintenance of rotating machinery.

Written by AI based on the content of the source documents.

Source documents

• Catalog 軸受付属品（アダプタスリーブ・取り外しスリーブ・ロックナット） 74 pages Open page 46
  Found on: https://azuma-eg.com/catalogue/