DTH hammer

　
DHD Series High Air Pressure DTH Hammer
Item Description Weight (kg/pc)
GV-DHD3.5 GV-DHD340 GV-DHD350 GV-DHD360 GV-DHD380
1 Top Sub 4.20 6.50 15.00 20.00 41.00
2 O Ring Of Top Sub 0.01 0.01 0.01 0.02 0.02
3 Breakout Ring - 　- 　- 　- 0.20
4 Check Valve 0.20 0.42 1.00 1.00 1.50
5 Spring 0.02 0.04 0.04 0.04 0.10
6 Compression Buffer 0.04 0.04 0.08 0.08 0.42
7 Air Distributor 1.40 2.20 3.70 5.00 12.50
8 Internal Cylinder 1.60 2.30 4.50 5.00 8.60
9 Piston 5.40 9.00 15.50 23.60 41.00
10 Outer Tube 9.50 15.00 30.00 36.80 62.00
11 Guided Sleeve 　- 　- - 2.40 -
12 O Ring Of Stop Ring 0.01 0.01 0.01 0.02 0.02
13 Stop Ring 0.20 0.20 0.30 0.60 1.20
14 Breakout Ring - 　- - - 0.20
15 Drive Chuck 1.95 3.50 6.40 6.00 17.50
16 Drill Bit - - - - -

Technical Data
Length(Without Bit) GV-DHD3.5 GV-DHD340 GV-DHD350 GV-DHD360 GV-DHD380
930mm 1032mm 1212mm 1245mm 1490mm
Weight(Without Bit) 25.00kg 39.00kg 76.00kg 99.00kg 187.00kg
External Diameter Ø82mm Ø99mm Ø126mm Ø142mm Ø180mm

Bit Shank DHD3.5 COP44/DHD340 COP54/DHD360 COP64/DHD360 COP84/DHD380
Hole Range Ø90-Ø110mm Ø110-Ø135mm Ø135-Ø155mm Ø155-Ø190mm Ø195-Ø254mm
Connection Thread 2 3/8" API REG 2 3/8" API REG 2 3/8" API REG 3 1/2" API REG 3 1/2" API REG 4 1/2" API REG


Working Pressure 1.0-2.5Mpa 1.0-2.5Mpa 1.0-2.5Mpa 1.0-2.6Mpa 1.0-2.9Mpa
Impact Rate at 17 Bar 28HZ 27HZ 25HZ 23HZ 27HZ
Recommended Rotation Speed 25-40r/min 25-40r/min 20-35r/min 20-30r/min 20-30r/min
Air Consumption 1.0Mpa:5.0m±/min 1.0Mpa:6.50m±/min 1.0Mpa:9.00m±/min 1.0Mpa:10.0m±/min 1.0Mpa:15.0m±/min
1.5Mpa:9.0m±/min 1.8Mpa:10.0m±/min 1.8Mpa:15.0m±/min 1.8Mpa:19.5m±/min 1.8Mpa:25.5m±/min
- 2.4Mpa:15.5m±/min 2.4Mpa:22.5m±/min 2.4Mpa:28.0m±/min 2.4Mpa:35.0m±/min