Bearing Adapter Sleeves are commonly used for locating bearings with a tapered bore onto a cylindrical seat as they can be used on plain or stepped shafts. They are easy to install and require no additional location on the shaft. When adapter sleeves are used on plain shafts, the bearing can be located at any position on the shaft. When used on stepped shafts together with an L-shaped spacer ring, bearings can be accurately positioned axially thereby facilitating bearing mounting and dismounting.

Adapter sleeves with hydraulic assistance (Hydraulic Adapter Sleeves) facilitates mounting of large bearings. Oil pumps are required to inject pressurized oil. They are provided with oil ducts on the thread side and groove on the outer surface for oil injection internal upon request, facilitating the mounting and mainly the dismounting of the assembly.

The hydraulic adapter sleeve has the characteristics of prolonging the life of the bearing and protecting the bearing. It can be used in steel construction, cement mining, textile industry etc. 

HOLK Bearing leads the way in the production of high-quality both European Metric and American Inch Standard Power Transmission products. 

We produce premium quality bearing adapter sleeves worth more than US$500,000 to a big famous European bearing company every year.

Our Adapter Sleeves range covers H 2 series, H 3 series, H 23 series, H 30 series, H 31 series, H 32 series, H 39 series, and Hydraulic Adapter Sleeves of HOH 23/HOH32 series, HOH 31 series, HOH 30 series, and HOH 39 series. 

The Withdrawal Sleeves range covers AH 2series, AH 3 series, AH 23 series, AH 32 series, AH 22 series, AH 30 series, AH 240 series, AH 241 series, and AH 39 series, and Hydraulic Withdrawal Sleeves of AOH 22 series, AOH 23 series, AOH 30 series, AOH 31 series, AOH 32 series, AOH 39 series, AOH 240 series and AOH 241 series, etc.

Technical Details:

Product Name: Hydraulic Bearing Adapter Sleeves

Series: OHA 31 series, OHA 3100 series

Taper: 1:12

Roughness: below Ra 2.5

Material: Carbon Steel, Stainless Steel

Surface Treatment: Anti-Rust oil; Blackening is available upon request

Packaging: Neutral, customized packaging is also available

Our adapter sleeves are supplied complete with Lock Nuts and Lock Washers. Both Metric and Inch adapter sleeves are available.

Drawing and Technical Data Sheet of OHA 31 (OHA 3100) series Hydraulic Adapter Sleeves

Great care has been taken to ensure the correctness of the information contained in this publication but no liability can be assumed for any incorrect or incomplete data. The HOLK technical department reserves the right to final interpretation.

The roughness of HOLK's adapter sleeves and withdrawal sleeves is generally below Ra. 2.5.

HOLK's adapter sleeves and withdrawal sleeves are supplied with anti-rust oil on the surfaces. Blackening is available upon request.