NBR Series DTH Hammer | |||
Item Description | Weight(kg) | ||
NBR1A | NBR2A | NBR3A | |
1、Top Sub | 1.7 | 2.6 | 5.2 |
2、“O” Type Ring | 0.1 | 0.1 | 0.1 |
3、Chenck Valve | 0.1 | 0.1 | 0.1 |
4、Spring | 0.05 | 0.05 | 0.2 |
5、Air Distributor | 0.8 | 0.6 | 0.8 |
6、Internal Cylinder | 0.8 | 0.8 | 1.3 |
7、Piston | 1.2 | 3.8 | 5.5 |
8、External Cylinder | 4 | 4.5 | 9.5 |
9、Guided Sleeve | 0.15 | 0.6 | 1 |
10、“O” Ring Of Stop Ring | 0.005 | 0.005 | 0.05 |
11、Stop Ring | 0.1 | 0.1 | 0.15 |
12、Drive Chuck | 0.8 | 1.2 | 2 |
13、Drill Bit | 1.7 | 2.5 | 4 |
Technical Data | |||
Length(Without Bit) | NBR1A | NBR2A | NBR3A |
760mm | 880mm | 889mm | |
Weight(Without Bit) | 10.00kg | 14.50kg | 26.00kg |
External Diameter | Ø54mm | Ø62mm | Ø82mm |
Bit Shank | BR1 | BR2 | BR2 |
Hole Range | Ø64-Ø76mm | Ø70-Ø90mm | Ø90-Ø110mm |
Connection Thread | Br40,BOX | Rd50,BOX | API2 3”/8REG |
Working Pressure | 1.0-1.5Mpa | 1.0-1.5Mpa | 1.0-1.5Mpa |
Impact Rate at 14 Bar | 27HZ | 25HZ | 25HZ |
Recommended Rotation Speed | 25-40r/min | 25-40r/min | 25-40r/min |
Air Consumption | 0.7Mpa:1.5m³/min | 0.7Mpa:2.5m³/min | 0.7Mpa:4.0m³/min |
1.0Mpa:2.5m³/min | 1.0Mpa:4.0m³/min | 1.0Mpa:6.0m³/min | |
1.4Mpa:3.0m³/min | 1.4Mpa:5.0m³/min | 1.4Mpa:8.0m³/min |