Coupling sleeve is used to connect drill rod and drill rod, and drill rod and shank adapter, and has a sleeve with internal thread. It’s widely used in open pit mining, underground mining, roadway excavation, anchoring engineering, blast furnace taphole, tunnel engineering, hydropower engineering, quarrying, and other construction projects.
Function: The coupling sleeve adopts a special structural design to reduce the energy loss during the drilling process, thus ensuring maximum impact energy at the drill bit position.
According to the structure, it includes a full bridge coupling sleeve and a reducing coupling sleeve.
Full bridge coupling sleeve: it is used for open-air construction, easy to dismantle, stable connection, and little risk of stuck.
Reducing coupling sleeve: Different thread at the ends to connect matchable products under specific conditions.
Coupling sleeve type: full bridge coupling sleeve and reducing coupling sleeve
Thread size: R32, R38, T38, T45, T51.
|Specification||Length||Outer Dia.||Thread Type||Weight|
|K31145-0150-1313||150||5 7/8″||45||1 3/4″||R32||1.00|
|K31145-0160-1313||160||6 5/16″||45||1 3/4″||R32||1.10|
|K31155-0170-1515||170||6 3/4″||55||2 5/32″||R38||1.80|
|K31155-0180-1515||180||7 1/16″||55||2 5/32″||R38||1.80|
|K31155-0190-1515||190||7 1/2″||55||2 5/32″||R38||2.20|
|K31155-0190-2525||190||7 1/2″||55||2 5/32″||T38||2.00|
|K31166-0207-2626||207||8 1/16″||66||2 5/8″||T45||3.20|
|K31172-0235-2727||235||9 1/4″||72||2 27/32″||T51||4.00|
|K31177-0235-2727||235||9 1/4″||77||3 1/32″||T51||4.30|
The above specifications mainly take the full bridge coupling sleeve coupling sleeve as an example.
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