Product Type: Semi-Bridge Type Coupling Sleeve
Thread Connection: Standard T38 Female Thread at Both Ends
Total Sleeve Length: 190mm
Outer Diameter (O.D.): 55mm
Primary Application: Surface Bench Drilling & Open-Pit Quarrying
Drill String Match: Optimized for Standard T38 Male-Male (MM) Extension Rods
HEAVY-DUTY WEAR ADVANTAGE:
Anti-Jamming Semi-Bridge: The central bridge prevents the two T38 rods from over-threading into each other, allowing for a tight fit during high-torque rotation and making uncoupling significantly easier after blasting.
High-Volume Consumable: As a high-wear component in top hammer setups, Bloom technically suggests maintaining a 1:5 ratio (1 Sleeve for every 5 Drill Rods) to keep your operations running seamlessly.
For surface bench drillers and quarry contractors seeking reliable string transmission, Bloom's T38-190mm semi-bridge coupling sleeve delivers the structural integrity required for punishing high-frequency impacts. This premium Dia 55mm sleeve is engineered to connect standard T38 male-male extension rods, ensuring consistent rotational alignment while drilling vertical or inclined production holes.
Manufactured from high-strength structural alloy steel and subjected to full-length gas carburization, the precision-machined internal threads are highly resistant to stripping and thread friction. The optimized semi-bridge design features a middle stop that effectively absorbs excessive tightening torque from the drifter, reducing thread wear and preventing premature rod breakage at the joint.
Contact Bloom's technical team today to discuss your bench drilling parameters and secure high-volume container pricing for your regular maintenance cycles.
Contact: Kevin Dai
Phone: 13605749661
E-mail: sales@bloommachinery.com
Whatsapp:+86 13605749661
Add: Hehua Bridge, Yunlong Town, Yinzhou Distric, Ningbo City, ZheJiang Province