SD Yali Rock Tools LLP

Hammer to Drill a hole of dia165 - 203 mm (6.5”–8”).
JDC65QL is a valve-less type hammer designed for high performance at low operating air pressures.
QL60 bit has a strong robust design to withstand heavy duty application and it does not use foot valves which reduces the possibility of hammer failure.
JDC65QL Hammer maximizes energy output and reduces service requirements.
Wear Sleeve is not reversible.
Three Start threads on Top sub and Drive sub ensure easy coupling/uncoupling of hammer.
All critical internal components are heat treated under strict control to maximize tool longevity.
An overall cost-effective and user friendly tool for use in the most demanding conditions.

S. No.	NAME OF ITEM	QTY	PART NO.
1	TOP SUB ( 3 ½” API REG PIN)	1 NO	15-6J6500-31ARM
2	“O” RING FOR TOP SUB	1 NO	37-11803H
3	CHECK VALVE	1 NO	19-35113R
4	CHOKE	1 NO	47-0134N (A)(C)(D)
5	SPRING	1 NO	17-231216
6	BUFFER RING	1 NO	27-120806/B
7	AIR DISTRIBUTOR	1 NO	12-6J6500
8	“O” RING FOR AIR DISTRIBUTOR	1 NO	37-09403H
9	INNER CYLINDER	1 NO	42-6J6501
10	PISTON	1 NO	52-6J6500
11	WEAR SLEEVE	1 NO	45-6J6500
12	PISTON RETAINER RING	1 NO	89-110645
13	ALIGNER/GUIDE BUSH	1 NO	65-6J6500
14	“O” RING FOR ALIGNER	4 NO’S	37-10604H
15	BIT RETAINER RING	1 NO	99-120820
16	DRIVE SUB	1 NO	75-6J6500
	SEAL KIT (PRT NO 2,4,5,8&14)	1 NO	6J6500QLK
	HAMMER ASSEMBLY	1 SET	34-6J6500QL-31ARMS

S. No.	DESCRIPTION	UNIT	DIMENSION
1	HAMMER LENGTH W/O BIT	mm	1051.0
2	HAMMER OUTSIDE DIA	mm	148.0
3	HAMMER WEIGHT	kg	98.0(approx.)
4	CYLINDER BORE	mm	120.50
5	PISTON STROKE	mm	80.0 (approx.)
6	PISTON WEIGHT	kg	22.70
7	HOLE SIZES	mm	165-203
8	WRENCH SIZE A/F	mm	A/F 101.0 /W-50.0
9	SUITABLE SHANK	-----	QL60 (WITHOUT FOOTVALVE)

JDC65QL Hammer