China Numa125 Down The Hole Impactor DTH Hammer for Construction and Mining Manufacturer, Factories

Customization:	Available
After-sales Service:	Repair or Replacement
Warranty:	6 Months

Basic Product Specifications

Model NO.

NUMA125 Hammer

Certification

CE, ISO 9001:2000, ISO 9001:2008

Material

Carbon Steel

Surface Treatment

Spray-Paint

Machine Type

Drilling Tools

Outside Diameter

305mm

Weight

698kg

Working Pressure

1.5-3.3MPa

Production Capacity

500,000 PCS/Month

Transport Package

Wooden Case

Product Description

High air pressure DTH hammer is a kind of down-the-hole hammer. It is mainly used for percussive drilling in rock formation. It is characterized by high air pressure and high efficiency. It is suitable for use in areas with abundant air supply. The working principle of the high air pressure DTH hammer is to use compressed air to drive the piston to reciprocate in the cylinder, thereby generating impact energy to impact the drill bit and drill into the rock formation. The high air pressure DTH hammer has the advantages of high drilling efficiency, long service life, and good stability. It is widely used in mining, quarrying, construction and other fields.

Deliver maximum energy to drilling bit, fast drilling speed and low air consumption.

Smooth performance and long service life due to high quality alloy steel materials.

Low problem rate and easy to maintenance due to simple, reliable inner structure.

Easy to depart bit from hammer due to multihead thread connecting chuck.

Interchangeable with DTH bit and drill pipe.

Technical Parameters

Type	Model	Length (mm)	Weight (kg)	External Dia.(mm)	Hole Range (mm)
3.5 inch	DHD3.5	930	25	Φ82	Φ90-110
4 inch	DHD340	1030	39	Φ99	Φ110-135
	SD4	1084	40.5	Φ99
	QL4	1097	41	Φ99
	Mission40	1005	40	Φ99
5 inch	DHD350	1214	76.5	Φ125	Φ135-155
	SD5	1175	72.5	Φ125
	QL5	1147	73	Φ125
	Mission50	1110	68.5	Φ125
6 inch	DHD360	1248	100	Φ142	Φ155-190
	SD6	1261	100	Φ142
	QL6	1212	95	Φ146
	Mission60	1161	90	Φ146
8 inch	D85	1492	188	Φ180	Φ195-254
	SD8	1463	192	Φ180
	QL8	1465	182	Φ180
	Mission80	1338	176	Φ180

Detailed Photos

Packaging & Shipping

Frequently Asked Questions

What are the available payment methods?

We accept T/T (Telegraphic Transfer), Western Union, or L/C at sight.

How long does it take to process an order?

Based on order quantity, it normally takes 25 days for production. If we have stock for your requested size, it only takes 2 to 3 days.

What are the shipping options?

For sample orders, we suggest courier express (DHL/UPS/TNT/FEDEX) or air. For bulk orders, we recommend shipping by air or by sea.

How do you ensure product quality?

We have our own experienced QC team. Every order undergoes strict inspection and testing before shipping out.

What kind of after-sales service do you provide?

Our sales team responds within 24 hours. Technical support is available at any time, and we provide free replacements for failures confirmed as quality issues.

Is the foot valve required for the drill bit?

No, the foot valve is not required in the bit for this series, which helps in maximizing efficiency and reducing maintenance.