threaded coupling sleeve for top hammer rock drill rod

Threaded Coupling Sleeve Features

The threaded coupling sleeve features a tough, shock-absorbing core material, which provides excellent fatigue life even under abrasive rock conditions.

Each threaded coupling sleeve is equipped with an internal central stop to prevent the drill rod from being screwed in too deeply. This design ensures correct alignment of the drill rods, prevents thread damage, and guarantees performance consistency of the threaded coupling sleeve after multiple drill rod changes.

Technical Specifications of the Threaded Coupling Sleeve

• Specification: middle stop
• Thread connection: R22, R25, and R32 options available
• Length: 140 mm, 150 mm, and 160 mm options available
• Diameter: 32 mm, 37 mm, and 45 mm options available
• Material: high-strength alloy steel
• Manufacturing process: full carburizing heat treatment
• Weight: ranges from 0.5 kg to 1.1 kg