የሃይድሮሊክ እቃዎች መመዘኛዎች መግለጫ II
In Japan, there are two types of pipeዕቃዎች በብዛት ጥቅም ላይ ይውላሉ
(1) ሁሉKomatsu units use fittings with a 30°taper seat and metric fine thread. All flanges are type 61 or 62 (except -10*). (2) Most other Japanese equipment uses fittings with 30°taper seat and British standard straight thread, commonly known as JIS(Japanese industrial standard) fittings. These fittings are not interchangeable with inch fittings because their cones are in opposite directions. All flanges are type 61 or 62 (except -10*).
ጃፓንኛ 30°taper Angle straight thread
Description: Japanese 30°taper Angle external thread joint can only be matched with Japanese 30°taper Angle internal thread. Both internal and external threads are straight threads with 30°taper seat. The seal is formed at the 30°cone seat. The threads on 30°taper Angle joints made in Japan conform to JIS B 0202 standard and are the same as BSPP threads. Both the British and Japanese ዕቃዎች አላቸው 30°cone seat, but they are not interchangeable because the British cone seat is opposite to the Japanese cone seat.
ጃፓንኛ 30°taper pipe threads
Description: Japanese taper pipeዕቃዎች and BSPT(taper thread)ዕቃዎች are exactly the same, and completely interchangeable. The Japaneseዕቃዎች does not have a 30°taper Angle, so it cannot be fitted with BSPP internal threads. This thread conforms to JIS B 0203 standard and is the same as BSPT thread. The seal of the Japanese taper pipe threadedዕቃዎች is formed at the thread.
Loose 30°taper straight thread
Description: Komatsu type 30°conical Angle straight thread joint and Japan 30°conical Angle straight threadዕቃዎች except for the difference in thread, other aspects are completely the same. Small looseዕቃዎች adopt metric fine thread, which conforms to JIS B 0207 standard. The looseዕቃዎች is sealed at its 30°cone Angle.
ፈካ ያለ flangeዕቃዎች
Note: Loose flangeየሆድ ዕቃዎች is similar to SAE 61 flange joint and is completely interchangeable. The o-ring sizes of various flanges are different. When replacing loose flanges with SAE-shaped flanges, always use SAE-shaped O-rings.