We are currently redesigning our website to be more mobile device friendly. You may encounter various page configurations as you move throughout the site. Thank you for your patience as we always strive to give you the best website experience.

Secoroc QLX 60/65 Down the Hole Hammer

QLX - The Latest in High Performance Water Well and Mining DTH Hammers

QLX hammer At Atlas Copco Secoroc we keep looking for new ways of improving our customers' productivity. That’s why we have taken the best from the TD hammer, added the best of the QL design, thrown in a few new ideas, and created the Secoroc QLX 60 and QLX 65 down the hole hammers.

These new 6” hammers offer 20% more all-around performance than QL hammers and better water-logged deep hole drilling capacity than its predecessor, the TD hammer. They are benchmarks with the highest rate of penetration (ROP) and reliability that are a cut above the rest, thanks to solutions such as the new e-kit making servicing easier and quicker to execute.

The QLX 60 and QLX 65 have been stringently field tested, drilling almost 750,000 feet prior to the launch. They have proven outstanding in mining and water well drilling thanks to the Air Select feature that enables the QLX to match a variety of air packages while utilizing the excess air for hammer power.

The Secoroc QLX 60 and QLX 65 are the first of a completely new range of reliable high performers with the latest technology.

QLX 60/65 cutaway

QLX 60/65 DTH Hammer Specifications

Field-proven check system.
Robust detent system.
Proven Quantum Leap air cycle provides "power" for 80% of piston down stroke.
Air Select system allows selectable timing to maximize hammer performance to match air package.
Reversible casing to maximize wear.
Industry leading QL style shank.

General Specifications	QLX 60	QLX 65
Connection	3 1/2" API Reg Pin
Outside diameter	5.60"	5.88"
Length w/o bit shoulder to shoulder	42.9"	42.9"
Length with bit extended	48.1"	48.1"
Length with bit retracted	46.6"	46.6"
Weight w/o bit	205 lbs.	235 lbs.
Backhead across flats	2 1/4" x 4 AF	2 1/4" x 4 AF
Minimum bit size	6.125"	6.50"
Maximum bit size	8.50"	8.50"
Bore	4.750"	4.750"
Piston weight	47 lbs.	47 lbs.
Stroke	3.75"	3.75"
Maximum pressure differential	500 psi	500 psi
Make-up torque	6000 ft-lb.	6000 ft-lb.

Air Consumption and Impact Frequency (with Air Select on setting 2)
	QLX 60		QLX 65
	scfm/min	bpm*	scfm/min	bpm*
100 psi	229	1384	229	1384
150 psi	360	1500	360	1500
200 psi	502	1616	502	1616
250 psi	655	1732	655	1732
300 psi	818	1847	818	1847
350 psi	993	1963	993	1963

*blows per minute

Operational Specifications
Feed Force	2000 - 3000 lbs.
Rotation Speed	30 - 60 rpm

Secoroc QLX 60/65 Down the Hole Hammer

QLX 60/65 Down the Hole Hammer part breakdown

Ref.	Part	Ref.	Part
1	Foot valve	14	Compression cone
2	Chuck for QLX 60 / for QLX 65	15	Distributor
3	Chuck O-ring*	16	Air Select guide plug
4	Bit retaining ring assembly	17	Detent kit
5	O-ring* (bit retainer)	17a	Plunger*
6	Bit bearing	17b	Plunger spring*
7	Bearing retaining ring	17c	Plunger retainer plug*
8	Casing for QLX 60 / for QLX 65	18	Check valve spring
9	Piston	19	Check valve (O-ring included)
10	Tail seal	20	Check valve O-ring*
11	Cylinder	21	Check valve choke plug - solid**
12	Valve assembly	21	Check valve choke plug - 1/4"**
12a	Seal*	21	Check valve choke plug - 1/8"**
12b	O-ring*	22	O-ring* (backhead)
13	O-ring*	23	Backhead for QLX 60 / for QLX 65
Not sold separately *Item 21 - Choke plug 1/4" and choke plug 1/8" may be used to bypass more air to reduce pressure and/or increase bailing velocity.

Wear Limits			Hammers and Kits
Chuck	Min. length	2.15"	QLX 60 complete, 3 1/2" API Reg Pin QLX 65 complete, 3 1/2" API Reg Pin Sustainablility kit (includes items 3, 2x5, 10, 12, 2x13, 20, 22) O-ring kit (includes items 4x3, 4x5, 4x13, 2x22, 20) E-kit, QLX 60 (includes items 2, 3, 2x5, 8, 10, 12, 2x13, 18, 20, 22, 23) E-kit, QLX 65 (includes items 2, 3, 2x5, 8, 10, 12, 2x13, 18, 20, 22, 23)
Casing reverse QLX 60	Min. OD	5.44"
Casing reverse QLX 65	Min. OD	5.63"
Casing discard	Min. OD	5.31"
Bit bushing	Max. ID	3.623"
Piston/Casing clearance	Max.	0.009"
Piston/Cylinder	Max.	0.009"
Foot valve protrusion	Max.	2.31"