ND-A series DTH hammer without foot valve
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Technical reference
Original manufacturer reference. Confirm the selected model and configuration before ordering.
ND25A exploded view
ND25A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 3.5Kg | 01-ND25A-01 |
| 02 | OO"Ring | 0.01Kg | 01-ND25A-02 |
| 03 | Check Valve | 0.13Kg | 01-ND25A-03 |
| 04 | Spring | 0.02Kg | 01-ND25A-04 |
| 05 | Valve Seat | 0.56Kg | 01-ND25A-05 |
| 06 | Inner Cylinder | 1.1Kg | 01-ND25A-06 |
| 07 | Piston | 3.8Kg | 01-ND25A-07 |
| 08 | Piston Case | 4.5Kg | 01-ND25A-08 |
| 09 | Guided Sleeve | 0.7Kg | 01-ND25A-09 |
| 10 | Retainer Ring | 0.1Kg | 01-ND25A-10 |
| 11 | O-Ring | 0.01Kg | 01-ND25A-11 |
| 12 | Drive Chuck | 1.5Kg | 01-ND25A-12 |
| 13 | Drill Bit | — | 01-ND25A-13 |
ND25A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 872mm |
| Weight | 16Kg |
| Outer Diameter | 71mm |
| Connection Thread | T48X10X1.5 |
| Bit Shank | ND25A |
| Hole Range | 476-90mm |
| Work Pressure | 1.0-1.7Mpa |
| Recommended Rotation Speed | 30-50r/min |
| Air Consumption | 1.0Mpa / 1.5Mpa / 4.5m/min / 3m/min |
ND35A exploded view
ND35A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 4.5Kg | 01-ND35A-01 |
| 02 | OO"Ring | 0.01Kg | 01-ND35A-02 |
| 03 | Check Valve | 0.13Kg | 01-ND35A-03 |
| 04 | Spring | 0.02Kg | 01-ND35A-04 |
| 05 | Valve Seat | 0.76Kg | 01-ND35A-05 |
| 06 | Inner Cylinder | 1.45Kg | 01-ND35A-06 |
| 07 | Piston | 4.8Kg | 01-ND35A-07 |
| 08 | Piston Case | 9.5Kg | 01-ND35A-08 |
| 09 | Guided Sleeve | 0.9Kg | 01-ND35A-09 |
| 10 | Retainer Ring | 0.15Kg | 01-ND35A-10 |
| 11 | OO"Ring | 0.01Kg | 01-ND35A-11 |
| 12 | Drive Chuck | 1.9Kg | 01-ND35A-12 |
| 13 | Drill Bit | — | 01-ND35A-13 |
ND35A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 886mm |
| Weight | 24.2Kg |
| Outer Diameter | 82mm |
| Connection Thread | API23/8"REG |
| Bit Shank | ND35A |
| Hole Range | 90-115mm |
| Work Pressure | 1.0-1.7Mpa |
| Recommended Rotation Speed | 30-50r/min |
| Air Consumption | 1.0Mpa / 1.5Mpa / 4m/min / 6.5m/min |
ND45A exploded view
ND45A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 8.1Kg | 01-ND45A-01 |
| 02 | OO"Ring | 0.01Kg | 01-ND45A-02 |
| 03 | Check Valve | Kg 0.3 | 01-ND45A-03 |
| 04 | Spring | 0.04Kg | 01-ND45A-04 |
| 05 | Valve Seat | 1.5Kg | 01-ND45A-05 |
| 06 | Inner Cylinder | 2.1Kg | 01-ND45A-06 |
| 07 | Piston | 8.4Kg | 01-ND45A-07 |
| 08 | Piston Case | 15Kg | 01-ND45A-08 |
| 09 | Guided Sleeve | 1 Kg | 01-ND45A-09 |
| 10 | Retainer Ring | 0.2Kg | 01-ND45A-10 |
| 11 | O-Ring | 0.01Kg | 01-ND45A-11 |
| 12 | Drive Chuck | 3.6Kg | 01-ND45A-12 |
| 13 | Drill Bit | — | 01-ND45A-13 |
ND45A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 986mm |
| Weight | 40.5Kg |
| Outer Diameter | 99mm |
| Connection Thread | API23/8"REG |
| Bit Shank | ND45A |
| Hole Range | 4110-135mm |
| Work Pressure | 1.0-2.2Mpa |
| Recommended Rotation Speed | 30-60r/min |
| Air Consumption | 1.0Mpa / 1.8Mpa / 5m3/min / 9m/min |
ND55A exploded view
ND55A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 14Kg | 01-ND55A-01 |
| 02 | OO"Ring | 0.01Kg | 01-ND55A-02 |
| 03 | Check Valve | 0.6Kg | 01-ND55A-03 |
| 04 | Spring | 0.06Kg | 01-ND55A-04 |
| 05 | Valve Seat | 2.15Kg | 01-ND55A-05 |
| 06 | Inner Cylinder | 3.3Kg | 01-ND55A-06 |
| 07 | Piston | 15.5Kg | 01-ND55A-07 |
| 08 | Piston Case | 24.2Kg | 01-ND55A-08 |
| 09 | Guided Sleeve | 2.64Kg | 01-ND55A-09 |
| 10 | Retainer Ring | 0.5Kg | 01-ND55A-10 |
| 11 | O-Ring | 0.01Kg | 01-ND55A-11 |
| 12 | Drive Chuck | 7 Kg | 01-ND55A-12 |
| 13 | Drill Bit | — | 01-ND55A-13 |
ND55A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 1122mm |
| Weight | 70Kg |
| Outer Diameter | 126mm |
| Connection Thread | AP123/8"REG |
| Bit Shank | ND55A |
| Hole Range | 136-155mm |
| Work Pressure | 1.0-2.5Mpa |
| Recommended Rotation Speed | 30-60r/min |
| Air Consumption | 1.0Mpa / 1.5Mpa / 13m3/min / 7m/min |
ND65A exploded view
ND65A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 21.5Kg | 01-SP681-01 |
| 02 | OORing | 0.01Kg | 01-SP681-02 |
| 03 | Disc Spring | 0.34Kg | 01-SP681-03 |
| 04 | Check Valve | 0.56Kg | 01-SP681-04 |
| 05 | Spring | 0.05Kg | 01-SP681-05 |
| 06 | Valve Seat | 4.3Kg | 01-SP681-06 |
| 07 | Inner Cylinder | 4.2Kg | 01-SP681-07 |
| 08 | Piston | 23Kg | 01-SP681-08 |
| 09 | Piston Case | 36.5kg | 01-SP681-09 |
| 10 | Guided Sleeve | 6.3kg | 01-SP681-10 |
| 11 | Check Ring | 0.02kg | 01-SP681-11 |
| 12 | Retainer Ring | 1 kg | 01-SP681-12 |
| 13 | O-Ring | 0.01Kg | 01-SP681-13 |
| 14 | Drive Chuck | 8.2kg | 01-SP681-14 |
| 15 | Drill Bit | — | 01-SP681-15 |
ND65A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 1210mm |
| Weight | 106Kg |
| Outer Diameter | 148mm |
| Connection Thread | API31/2"REG |
| Bit Shank | ND65A |
| Hole Range | 158-203mm |
| Work Pressure | 1.2-2.5Mpa |
| Recommended Rotation Speed | 30-60r/min |
| Air Consumption | 1.8Mpa / 2.4Mpa / 16m/min / 23m/min |
ND75A exploded view
ND75A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 31.2Kg | 01-SP781-01 |
| 02 | OO"Ring | 0.01Kg | 01-SP781-02 |
| 03 | Disc Spring | 0.5Kg | 01-SP781-03 |
| 04 | Check Valve | 0.65Kg | 01-SP781-04 |
| 05 | Spring | 0.09Kg | 01-SP781-05 |
| 06 | Valve Seat | 5.5Kg | 01-SP781-06 |
| 07 | Inner Cylinder | 5.5Kg | 01-SP781-07 |
| 08 | Piston | 34.5Kg | 01-SP781-08 |
| 09 | Piston Case | 47kg | 01-SP781-09 |
| 10 | Guided Sleeve | 5.65kg | 01-SP781-10 |
| 11 | Check Ring | 0.02kg | 01-SP781-11 |
| 12 | Retainer Ring | 1.3kg | 01-SP781-12 |
| 13 | Drive Chuck | 11.5kg | 01-SP781-13 |
| 14 | Drill Bit | — | 01-SP781-14 |
ND75A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 1225mm |
| Weight | 143.5Kg |
| Outer Diameter | 165mm |
| Connection Thread | API31/2"REG |
| Bit Shank | ND75A |
| Hole Range | 178-216mm |
| Work Pressure | 1.5-2.8Mpa |
| Recommended Rotation Speed | 30-60r/min |
| Air Consumption | 1.8Mpa / 2.4Mpa / 21m/min / 28m3/min |
ND85A exploded view
ND85A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 38.5Kg | 01-SP880-01 |
| 02 | 0O"Ring | 0.02Kg | 01-SP880-02 |
| 03 | Check Valve | 0.65Kg | 01-SP880-03 |
| 04 | Spring | 0.1Kg | 01-SP880-04 |
| 05 | Valve Seat | 6.2Kg | 01-SP880-05 |
| 06 | Inner Cylinder | 7.4Kg | 01-SP880-06 |
| 07 | Piston | 44.5Kg | 01-SP880-07 |
| 08 | Piston Case | 69.5Kg | 01-SP880-08 |
| 09 | Guided Sleeve | 6.1kg | 01-SP880-09 |
| 10 | Retainer Ring | 1.2kg | 01-SP880-10 |
| 11 | O-Ring | 0.01Kg | 01-SP880-11 |
| 12 | Drive Chuck | 19.3kg | 01-SP880-12 |
| 13 | Drill Bit | — | 01-SP880-13 |
ND85A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 1354mm |
| Weight | 193Kg |
| Outer Diameter | 185mm |
| Connection Thread | API41/2"REG |
| Bit Shank | ND85A |
| Hole Range | 198-254mm |
| Work Pressure | 1.5-3.3Mpa |
| Recommended Rotation Speed | 30-60r/min |
| Air Consumption | 1.8Mpa / 2.4Mpa / 34m3/min / 25m3/min |
ND140A exploded view
ND140A parts
| Ref. | Part | Weight | Part No. |
|---|---|---|---|
| 01 | Top Sub | 160Kg | 01-SP330-01 |
| 02 | Adjuster Shim | 1.5Kg | 01-SP330-02 |
| 03 | OO-Ring | 0.05Kg | 01-SP330-03 |
| 04 | Check Valve | 3.4Kg | 01-SP330-04 |
| 05 | Spring | 0.4Kg | 01-SP330-05 |
| 06 | Valve Seat | 31.5Kg | 01-SP330-06 |
| 07 | Inner Cylinder | 28.7Kg | 01-SP330-07 |
| 08 | Piston | 173Kg | 01-SP330-08 |
| 09 | Piston Case | 317Kg | 01-SP330-09 |
| 10 | Guided Sleeve | 43.5Kg | 01-SP330-10 |
| 11 | Check Ring | 0.5Kg | 01-SP330-11 |
| 12 | Retainer Ring | 12.4Kg | 01-SP330-12 |
| 13 | OO-Ring | 0.03Kg | 01-SP330-13 |
| 14 | Adjuster Shim | 1.9Kg | 01-SP330-14 |
| 15 | Drive Chuck | 77.4Kg | 01-SP330-15 |
| 16 | Drill Bit | — | 01-SP330-16 |
ND140A technical parameters
| Parameter | Value |
|---|---|
| Length (less bit) | 1861mm |
| Weight | 851Kg |
| Outer Diameter | 332mm |
| Connection Thread | API75/8"REG |
| Bit Shank | SP330 |
| Hole Range | 350-4550mm |
| Work Pressure | 1.5-3.3Mpa |
| Recommended Rotation Speed | 25~45r/min |
| Air Consumption | 2.4Mpa / 1.8Mpa / 53m/min / 76m/min |