Middle-Low Air Pressure DTH Hammers

Short Description:

BRIA、BR2A and BR3A series DTH Hammers are designed to operate efficiently at low air pressures and medium air pressures, using BR series bits. The main features are as follows: 1. The operating air pressures are between 0.7Mpa and 1.75Mpa. 2. Valveless hammers. 3. Simple structure, easy to assemble and to disassemble, long life. 4. Higher impact frequency and faster drilling speed. 5. lower air consumption and lower oil consumption. A hole can be drilled on the check valve to provide more ef...

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Product Detail

BR1 DTH HAMMER

BR2-DTH HAMMER

BR3 DTH HAMMER

Product Tags

BRIA、BR2A and BR3A series DTH Hammers are designed to operate efficiently at low air pressures and medium air pressures, using BR series bits.

The main features are as follows:

1. The operating air pressures are between 0.7Mpa and 1.75Mpa.

2. Valveless hammers.

3. Simple structure, easy to assemble and to disassemble, long life.

4. Higher impact frequency and faster drilling speed.

5. lower air consumption and lower oil consumption. A hole can be drilled on the check valve to provide more efficient cuttings discharge.

6. Especially suitable for quarrying.

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BR1-DTH Hammer

Ref.	Parts	Weight	Ref.	Parts	Weight
1	Top Sub	1.92 kg	9	Guided Sleeve	0.29 kg
2	“O”Ring	0.01 Kg	10	Check Ring	0.1 kg
3	Check Valve	0.08 kg	11	Retainer Ring	0.08 kg
4	Spring	0.01 Kg	12	“O”Ring	0.01 Kg
5	Air distributor	0.46 kg	13	Drive Chuck	0.82 kg
6	Inner Cylinder	0.38 kg	14	Drill Bit
7	Piston	1.16 kg
8	Outer Cylinder	3.46 kg

Technical parameters
Length(Without Bit)	Weight	External diameter	Connection Thread	Bit Shank	Hole Range
698mmmm	8.8Kg	Φ56mm	RD40 BOX	BR1	Φ76-Φ90mm
Working pressure		Recommended rotation speed		Air Consumption
Working pressure		Recommended rotation speed		1.0Mpa	1.4Mpa
0.8-1.5Mpa		30-50 r/min		2m³/min	3m³/min

BR2-DTH Hammer

Ref.	Parts	Weight	Ref.	Parts	Weight
1	Top Sub	2.5 Kg	9	Guided Sleeve	0.52 Kg
2	“O”Ring	0.01 Kg	10	Retainer Ring	0.1 Kg
3	Check Valve	0.08 Kg	11	“O”Ring	0.01 Kg
4	Spring	0.05 Kg	12	Drive Chuck	1.2 Kg
5	Valve Seat	0.5 Kg	13	Drill Bit
6	Inner Cylinder	0.6 Kg
7	Piston	2.3 Kg
8	Piston Case	4.5 Kg

BR2 Technical parameters
Length(Without Bit)	Weight	External diameter	Connection Thread	Bit Shank	Hole Range
810mmmm	12.5Kg	Φ64mm	RD50 BOX	BR2	Φ70-Φ90mm
Working pressure		Recommended rotation speed		Air Consumption
Working pressure		Recommended rotation speed		1.0Mpa	1.4Mpa
0.8-1.5Mpa		30-50 r/min		3m³/min	4.5m³/min

BR3-DTH Hammer

Ref.	Parts	Weight	Ref.	Parts	Weight
1	Top Sub	4.4 Kg	9	Guided Sleeve	0.9 Kg
2	“O”Ring	0.01 Kg	10	Check Ring	0.15 Kg
3	Check Valve	0.13 Kg	11	Retainer Ring	0.25 Kg
4	Spring	0.02 Kg	12	“O”Ring	0.01 Kg
5	Valve Seat	0.76 Kg	13	Drive Chuck	2 kg
6	Inner Cylinder	1.45 Kg	14	Drill Bit
7	Piston	4.7 Kg
8	Piston Case	6 Kg

BR3 Technical parameters
Length(Without Bit)	Weight	External diameter	Connection Thread	Bit Shank	Hole Range
871mmmm	21Kg	Φ82mm	API2 3/8″REG	BR3	Φ90-Φ115mm
Working pressure		Recommended rotation speed		Air Consumption
Working pressure		Recommended rotation speed		1.0Mpa	1.5Mpa
1.0-1.7Mpa		30-50 r/min		4m³/min	7m³/min