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High Air Pressure DTH Hammer with Foot Valve

It is a kind of valve less high air pressure DTH hammer with foot valve .
The main features are as following:
Valve less air distribution. More reliable.
Simple design of the piston. Long life span.
More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.
Fewer internal parts, simple structure, long life span, less failure and easier to maintain because all the parts are heat treated.
Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multiple steps thread.

KD Series DTH Hammer

Item Description Weight(kg)
1. Top Sub KD35 KD45 KD55 KD65 KD85
2. O ring of Top Sub 4.20 6.50 15.00 20.00 41.00
3. Breakout Ring 0.01 0.01 0.01 0.02 0.02
4. Check Valve 0.01


0.20
5. Spring 0.20 0.42 1.00 1.00 1.50
6. Compression Buffer 0.02 0.04 0.04 0.04 0.10
7. Air Distributor 0.04 0.04 0.08 0.08 0.42
8. Internal Cylinder 1.40 2.20 3.70 5.00 12.50
9. Piston 1.60 2.30 4.50 5.00 8.60
10. External Cylinder 5.40 9.00 15.50 23.60 41.00
11. Guided Sleeve 9.50 15.00 30.00 36.80 62.00
12. O Ring of Stop Ring


2.40 9.60
13. Stop Ring 0.01 0.01 0.01 0.02 0.02
14. Break out Ring 0.20 0.20 0.30 0.60 1.20
15. Drive Chuck 0.01


0.20
16. Drill Bit 1.95 3.50 6.40 6.00 17.50
Technical Date
Model KD35 KD45 KD55 KD65 KD85
Length(Without Bit) 930 mm 1030 mm 1214 mm 1248 mm 1482 mm
Weight(Without Bit) 25.00 kg 39.00 kg 76.50 kg 100.00 kg 188.00 kg
External Diameter Φ82 mm Φ99 mm Φ126 mm Φ142 mm Φ144 mm Φ146 mm Φ148 mm Φ180/Φ185 mm
Bit Shank DHD3.5 COP44/DHD340 COP54/DHD340 COP64/DHD360 COP84/DHD380
Hole Range Φ90-Φ110mm Φ110-Φ135mm Φ135-Φ1155mm Φ155-Φ190mm Φ195-Φ254mm
Connection Thread API 2 3/8" Reg API 2 3/8" Reg API 2 3/8" Reg API 3 1/2" Reg API 2 7/8" Reg API 3 1/2" Reg API 4 1/2" Reg
Working Pressure 1.0-1.5 Mpa 1.2-2.0 Mpa 1.3-2.3 Mpa 1.5-2.5 Mpa 1.5-3 Mpa
Impact Rate at 17 Bar 28 HZ 27 HZ 25 HZ 23 HZ 27 HZ
Recommended Rotation Speed 25-40 r/min 25-40 r/min 20-35 r/min 20-30 r/min 20-30 r/min
Air Consumption 1.0Mpa:4.5 m³/min 1.0Mpa:6 m³/min 1.0Mpa:9 m³/min 1.0Mpa:10 m³/min 1.0Mpa:15 m³/min
1.5Mpa:9.0 m³/min 1.8Mpa:10 m³/min 1.8Mpa:15 m³/min 1.8Mpa:20 m³/min 1.8Mpa:26 m³/min

2.4Mpa:15 m³/min 2.4Mpa:23 m³/min 2.4Mpa:28.5 m³/min 2.4Mpa:34 m³/min

KSD Series DTH Hammer

Item Description KSD4 KSD5 KSD6 KSD8
1. Top Sub 6.50 15.00 20.00 41.00
2. O ring of Top Sub 0.01 0.01 0.01 0.02
3. Breakout Ring 0.01 0.20
4. Check Valve 0.42 1.00 1.00 1.50
5. Spring 0.04 0.10 0.05 0.01
6. Compression Buffer 0.04 0.05 0.10 0.42
7. Air Distributor 2.20 3.50 5.00 12.50
8. Internal Cylinder 2.50 4.20 5.00 8.60
9. Piston 9.00 15.50 24.00 42.00
10. External Cylinder 15.60 25.00 35.00 65.00
11. O Ring of Stop Ring 0.02 0.01 0.01 0.05
12. Stop Ring 0.20 0.50 0.50 1.20
13. Guided Sleeve 1.50 3.40
14. Break out Ring 0.01
15. Drive Chuck 4.00 7.50 7.50 15.50
16. Drill Bit 9.60 15.60 25.80 37.00
Technical Date
Model KSD4 KSD5 KSD6 KSD8
Length(Without Bit) 1084 mm 1175 mm 1261 mm 1463 mm
Weight(Without Bit) 40.50 kg 72.50 kg 100.00 kg 192.00 kg
External Diameter Φ99 mm Φ126 mm Φ142 mm-Φ144 mm Φ146 mm-Φ148 mm Φ180 选配 / Φ185 mm
Bit Shank SD4 SD5 SD6 SD8
Hole Range Φ110-Φ135mm Φ135-Φ155mm Φ155-Φ190mm Φ195-Φ254mm
Connection Thread API 2 3/8" Reg API 3 1/2" Reg API 2 7/8" Reg API 3 1/2" Reg API 4 1/2" Reg
Working Pressure 1.2-2.0 Mpa 1.3-2.3 Mpa 1.5-2.5 Mpa 1.5-3.0 Mpa
Impact Rate at 17 Bar 27 HZ 25 HZ 23 HZ 20 HZ
Recommended Rotation Speed 25-40 r/min 20-35 r/min 20-30 r/min 5-25 r/min
Air Consumption 1.0Mpa:6 m³/min 1.0Mpa:9 m³/min 1.0Mpa:10 m³/min 1.0Mpa:15 m³/min
1.8Mpa10 m³/min 1.8Mpa:15 m³/min 1.8Mpa:20 m³/min 1.8Mpa:26 m³/min
2.4Mpa15 m³/min 2.4Mpa:23 m³/min 2.4Mpa:28.5 m³/min 2.4Mpa:34 m³/min

KQL Series DTH Hammer

Item Description KQL4 KQL5 KQL6 KQL8
1. Top Sub 6.50 15.00 20.00 41.00
2. O ring of Top Sub 0.01 0.015 0.02 0.02
3. Breakout Ring 0.30
4. Check Valve 0.42 1.00 1.00 1.50
5. Spring 0.04 0.10 0.10 0.10
6. Compression Buffer 0.04 0.10 0.10 0.42
7. Air Distributor 2.20 3.50 6.00 13.00
8. Internal Cylinder 2.30 4.20 5.00 8.60
9. Piston 9.00 19.00 23.50 41.00
10. External Cylinder 16.50 24.60 31.00 60.00
11. Guided Sleeve 0.90 1.00 2.20
12. O Ring of Stop Ring 0.01 0.01 0.02 0.02
13. Stop Ring 0.30 0.40 0.60 1.20
14. Break out Ring 0.30
15. Drive Chuck 3.00 4.60 5.40 12.00
16. Drill Bit 9.50 15.50 24.60 35.00
Technical Date
Model KQL4 KQL5 KQL6 KQL8
Length(Without Bit) 1097 mm 1156 mm 1212 mm 1465 mm
Weight(Without Bit) 41.00 kg 73.00 kg 95 kg 182.00 kg
External Diameter Φ99 mm Φ126 mm Φ142 mm Φ144mm Φ146 mm Φ148 mm Φ180 mm
Bit Shank QI40 QI50 QI60 QI80
Hole Range Φ110-Φ135mm Φ135-Φ155mm Φ155-Φ190mm Φ195-Φ254mm
Connection Thread API 2 3/8" Reg API 3 1/2" Reg API 2 7/8" Reg API 3 1/2" Reg API 2 7/8" Reg API 2 7/8" IF API 4 1/2" Reg
Working Pressure 1.2-2.0 Mpa 1.3-2.3 Mpa 1.5-2.5 Mpa 1.5-3.0 Mpa
Impact Rate at 17 Bar 27 HZ 25 HZ 23 HZ 20 HZ
Recommended Rotation Speed 25-40 r/min 25-40 r/min 20-30 r/min 15-25 r/min
Air Consumption 1.0Mpa:6 m³/min 1.0Mpa:9 m³/min 1.0Mpa:10 m³/min 1.0Mpa:15 m³/min
1.8Mpa:10 m³/min 1.8Mpa:15 m³/min 1.8Mpa:20 m³/min 1.8Mpa:26 m³/min
2.4Mpa:15 m³/min 2.4Mpa:23 m³/min 2.4Mpa:28.5 m³/min 2.4Mpa:34 m³/min
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