Withdrawal Sleeves

Withdrawal sleeves product codes start with AH or AHX. The X refers to a DIN revision index, which has now become standard. The product codes for withdrawal sleeves with oil grooves and oil ducts use the letters AOH or AOHX. Withdrawal sleeves whose product codes contain AOH or AOHX always have oil ducts in the bore and on the taper. Sleeves with the code numbers 240.. and 241.. have a 1:30 taper, all the others have a 1:12.

Suffixes Since 1997, there have been withdrawal sleeves with the suffix G. The G indicates a change of thread size. With withdrawal sleeves and adapter sleeves having different thread sizes, attempts have been made to standardise them. These standardisation efforts are inspired by a desire to reduce nut variation.