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Quick Details

Place of Origin: China (Mainland)
Brand Name: DR
Model Number: DR-B-02

Specifications

High Air Pressure DTH Hammer
InchLength
(Less Bit)
Weight
(Less Bit)
External
Diameter
Bit ShankHole RangeConnection Tread
2"872mm16kgΦ71mmHD25Φ76-Φ90T42*10*1.5
3"888mm25kgΦ82mmIR3.5Φ90-Φ115API 2 3/8" Reg
4"1011mm43.2kgΦ99mmCOP44 DHD340Φ110-Φ135API 2 3/8" Reg
986mm37kgΦ92mmCOP44 DHD340Φ105-Φ120
1012mm40kgΦ99mmSD4Φ110-Φ135
1070mm40kgΦ99mmQL40Φ110-Φ135
1005mm40kgΦ99mmMISSION 40Φ110-Φ135
5"1110mm69kgΦ125mmCOP54 DHD350RΦ135-Φ155API 2 3/8" Reg
API 3 1/2" Reg
1110mm66kgΦ116mmCOP54 DHD350RΦ127-Φ145
1102mm68kgΦ125mmCOP55C DHD350QΦ135-Φ155
1090mm70kgΦ125mmSD5Φ135-Φ155
1090mm67kgΦ125mmQL50Φ135-Φ155
1110mm68.5kgΦ125mmMISSION 50Φ135-Φ155
6"1238mm98kgΦ142mmCOP64 DHD360Φ155-Φ203API 3 1/2" Reg
1182mm90kgΦ146mmSD6Φ155-Φ203
1183mm92kgΦ146mmQL60Φ155-Φ203
1161mm90kgΦ146mmMISSION 60Φ155-Φ203
7"1258mm120kgΦ165mmCOP64 DHD360Φ175-Φ216API 3 1/2" Reg
8"1359mm175kgΦ180mmCOP84 DHD380Φ195-Φ254API 4 1/2" Reg
1330mm174kgΦ180mmSD8Φ195-Φ254
1330mm171kgΦ180mmQL80Φ195-Φ254
1338mm176kgΦ180mmMISSION 80Φ195-Φ254
1340mm203kgΦ203mmQL80Φ216-Φ254
10"1525mm316kgΦ226mmSD10Φ254-Φ311API 6 5/8" Reg
1545mm305kgΦ226mmNUMA100Φ254-Φ311
12"1880mm474kgΦ275mmDHD1120Φ305-Φ445API 6 5/8" Reg
1860mm480kgΦ275mmSD12Φ305-Φ445
1880mm475kgΦ275mmNUMA120Φ305-Φ445
1880mm470kgΦ275mmNUMA125Φ305-Φ445

High pressure DTH Hammer

Introduction

It is a kind of valveless high air pressure DTH hammer with foot valve.

The rock hammer has the fellow advantages

1: Valveless air distribution. more reliable.

2. The rock impacter are simple design of the piston, long life.

3. More efficient energy transfter,faster drilling speed, lower air consumption and lower oil consumption.

4. Fewer internal parts, simple structure, long life, less failure and easier to maintain because all the parts are heat treated.

5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected multi-step thread.