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Secoroc QLX 60/65 Down the Hole Hammer
QLX - The Latest in High Performance Water Well and Mining DTH Hammers
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 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

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" |
|