SD DTH Drilling Hammer

Experience unparalleled drilling efficiency with our SD Series DTH Hammer, specifically engineered for high air pressure operations. Whether you are tackling hard rock in large-scale mining projects or demanding water well drilling, the SD series delivers consistent impact energy and superior penetration rates. Designed to withstand extreme conditions, this high air pressure SD series DTH hammer is your reliable partner for reducing downtime and maximizing ROI.

Item		SD4 DTH Hammer	SD5 DTH Hammer	SD6 DTH Hammer	SD8 DTH Hammer	SD10 DTH Hammer	SD12 DTH Hammer
Length (less bit)	mm	1082mm	1178mm	1277mm	1463mm	1413mm	1825mm
	inch	42.68	46.46	50.2	57.64	55.67	71.85
Outer diameter	mm	￠99mm	￠125mm	￠142mm	￠180mm	￠225mm	￠275mm
	inch	3.9	4.92	5.59	7.09	8.86	10.83
Connection thread		AP12 3/8"REG	AP12 3/8"REG	AP13 1/2"REG	AP14 1/2"REG	AP15 1/2"REG	AP16 5/8"REG
Bit shank		SD4	SD5	SD6	SD8	SD10	SD12
Hole range		￠110-￠135mm	￠135-￠155mm	￠150-￠190mm	￠195-￠254mm	￠254-￠311mm	￠295-￠400mm
work pressure		1.0-2.2 Mpa	1.0-2.5 Mpa	1.0-2.5 Mpa	1.5-3.3 Mpa	1.5-3.3 Mpa	1.5-3.3 Mpa
Rotation speed receommended		30-60 r/min	30-60 r/min	30-60 r/min	30-60 r/min	25-50 r/min	25-50 r/min
Air consumption		1.8Mpa-5.5m³/min	1.8Mpa-9m³/min	1.8Mpa-20m³/min	1.8Mpa-26m³/min	1.8Mpa-40m³/min	1.8Mpa-50m³/min
		2.4Mpa-10m³/min	2.4Mpa-15m³/min	2.4Mpa-28m³/min	2.4Mpa-34m³/min	2.4Mpa-60m³/min	2.4Mpa-70m³/min
Weight		43kg	73.6KG	99kg	194kg	273kg	589kg
Bit Shank		SD4 L=260 Spline=8	SD5 L=259 Spline=8	SD6 L=322 Spline=8	SD8 L=321 Spline=8	SD10 L=356 Spline=8	SD12 L=470 Spline=8

Our SD Series utilizes a unique internal structure to maximize the compression of high-pressure air, ensuring every strike delivers maximum breaking force to the rock face.

Integrated Noise Reduction Technology: We understand the challenges of site noise. The SD Series features an optimized exhaust path and precision-machined internal components that significantly reduce high-frequency piercing noise, creating a safer working environment for operators.

Vibration Dampening & Shock Absorption: Equipped with a specialized internal shock absorber system, our hammer minimizes the feedback vibration sent to the drill rig. This not only protects the threads and rotary head of your expensive machinery but also extends the service life of the hammer itself.

Valveless Air Distribution: The SD series adopts a valveless design, simplifying the internal structure and reducing the risk of mechanical failure under high-frequency impact.

To ensure peak performance and longevity of your high air pressure SD series DTH hammer, we recommend the following maintenance schedule:

Gdrills warrants each new product to be free from defects in materials and workmanship for 280 days from the date of shipping and agrees only to repairs, replace, or give credit. At no time will any cash refund be remitted to resolve a warranty claim. Defects caused by improper use or application shall not be considered defects within the scope of the foregoing warranty. If any repairs, modifications or alterations are made to the product Gdrills shall be relieved of any responsibilities for fulfillment of this warranty. If improper use, lack of lubrication, or incorrect maintenance are made on or used with the products, Gdrills shall also be relieved of responsibilities for fulfillment of this warranty.

Disclaimer. Under no circumstances shall Gdrills be liable for any consequential or special damage which any person, company, or other entity many suffer or claim to suffer or incur or claim to incur as a result of any defect in the product or in any correction or alternation thereof made or furnished by Gdrills. "Consequential" or "Special" damage as used herein includes but is not limited to costs of transportation, lost sales, lost profits, lost income, increased overhead.

Maximum liability. The maximum liability of Gdrills under the exclusive warranty set forth herein shall be the amount paid to Gdrills by customers.

1.Any warranty claim must be submitted in writing to Gdrills within 280 days from shipping date;

2.Any warranty claim will be resolved when:

1) Detailed photos or videos are sent to Gdrills with date purchased and the information required under item 2)as below. All products where a warranty claim is pending are required to be kept by claimers until Gdrills makes a full disposition of the claim. Gdrills reserves the option to have the products returned in the event the photos are inconclusive in resolving the claim.

2) The claimer is to advise Gdrills of the problem with the products including the footage the product drilled, air pressure, rock formation and drilling location. On bits the diameter over the gauge row must be given along with the width across the flats on gauge row buttons. In addition the claimer is requested to offer other pertinent information useful in analyzing the claim.

3) Once the claim is approved by Gdrills , Gdrills will offer new products, specific spare parts or issue a credit of up to a maximum of the amount paid to Gdrills by claimer. Gdrills reserves the right of final determination of any credit to be issued.

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