Low Air Pressure CIR90 DTH Hammer | Central Exhaust Design

Price Negotiable

Price: Please contact us

MOQ: 10PCS

Delivery Time: 7-15 days

Brand: HLDRILL

Product Description

Low Air Pressure CIR90 DTH Hammer | Central Exhaust Design

The CIR90 Low Air Pressure DTH Hammer is a highly reliable valved down-the-hole hammer featuring an impact mechanism with plate valve, single piston, and central exhaust structure. Engineered specifically for low-air-pressure operating conditions, its robust design ensures stable impact performance at air pressures ranging from 0.5 to 0.7 MPa.

Performance Characteristics

High single-impact energy with low energy consumption during rock drilling
Optimal weight ratio between piston and drill bit with prolonged effective action duration for improved drilling efficiency and extended tool service life
Excellent central exhaust and cuttings discharge capabilities to minimize re-crushing of rock fragments
Equipped with check valve assembly for underwater rock drilling operations

Applications

Widely used in mining, quarrying, water well drilling, and engineering blasting applications.

Technical Specifications

Hammer Length without bit	855 mm
Top sub thread	F48x10PIN
Outside diameter	80 mm
Weight	22 KG
Bit diameter	90-120 mm
Working Pressure	5-10 Bar
Air consumption	7-12 M³/min
Bit shank	CIR90

Component Parts

Item Description	Part Number	Item Description	Part Number
Top Sub	CIR90A-01	Valve	CIR90A-08
Cap	CIR90A-02	Air Distributor	CIR90A-09
Check Valve	CIR90A-03	Inner Cylinder	CIR90A-10
Spring	CIR90A-04	Piston	CIR90A-11
Shim	CIR90A-05	Guide Sleeve	CIR90A-12
Rubber ring	CIR90A-06	Driver Sub	CIR90A-13
Valve cap	CIR90A-07	Outer Sleeve	CIR90A-14