JS DTH hammer without foot valve

Simple Structure: Ensures easy maintenance and reliability.
Optimized Design: Maximizes energy output efficiency.
Efficient Operation: Valveless bits increase drilling speed by 10%-15% and prevent foot valve breakage.
Durability: Strict heat treatment of critical components extends tool longevity.

Categories: TIANHE Drill

Tags: DTH hammer

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JS DTH hammer without foot valve is a new high pressure hammer developed by our company.

1. Simple structure ensures easy maintenance and reliability.
2. Optimized design maximizes energy output.
3. High impact power and freguency desian ensures smooth operation,drill speeds 10%-15% higher than foot valye types.
4. Bits are valveless to prevent the issue of foot valve breakage.
5. All critical internal components under strict heat treatment to maximize tool longevity.

Hammer mode	Dth bit shank	Foot valve	Thread connection	Hammer OD(mm)	Rec. hole size(mm)	Length without bit(mm)	Piston (kg)	Hammer weight(kg)	Working pressure(bar)
3.5" Hammer
JS3.5B	BR33	No	API 2 3/8" REG pin	80	90-105	847	4.1	24.0	14-20
JS3.5D	DHD3.5	No	API 2 3/8" REG pin	80	90-105	863	4.1	24.0	14-20
4" Hammer
JS4H	DHD340	No	API 2 3/8" REG pin	99	105-130	967	8.7	40.0	16-25
JS4S	SD4	No	API 2 3/8" REG pin	99	105-130	998	8.7	40.0	16-25
JS4M	M40	No	API 2 3/8" REG pin	99	105-130	986	8.7	41.0	16-25
JS4L	QLX40	No	API 2 3/8" REG pin	99	105-130	967.5	8.7	40.0	16-25
5" Hammer
JS5H	DHD350	No	API 2 3/8" or API 3 1/2"	126	140-152	1089	14.8	69.5	16-28
JS5S	SD5	No	API 2 3/8" or API 3 1/2"	126	140-152	1089	14.8	69.8	16-28
JS5M	M50	No	API 2 3/8" or API 3 1/2"	126	140-152	1089	14.8	68.8	16-28
JS5L	QL50	No	API 2 3/8" or API 3 1/2"	126	140-152	1089	14.8	70.0	16-28
6" Hammer
JS6H	DHD360	No	API 3 1/2" REG pin	148	155-190	1163.5	23.3	101.5	16-30
JS6S	SD6	No	API 3 1/2" REG pin	148	155-190	1180	23.3	99	16-30
JS6M	M60	No	API 3 1/2" REG pin	148	155-190	1087	23.3	100	16-30
JS6L	QL60	No	API 3 1/2" REG pin	148	155-190	1161	23.3	105	16-30
8" Hammer
JS8H	DHD380	No	API 4 1/2" REG pin	185	203-245	1365	42.5	195	16-30
JS8S	SD8	No	API 4 1/2" REG pin	185	203-245	1333	42.5	195	16-30
JS8M	M80	No	API 4 1/2" REG pin	185	203-245	1342	42.5	193	16-30
JS8L	QL80	No	API 4 1/2" REG pin	185	203-245	1283	42.5	192	16-30
10" Hammer
JS10N	Numa100	No	API 5 1/2" or API 6 5/8"	225	245-305	1492	70.5	295	16-35
JS10S	SD10	No	API 5 1/2" or API 6 5/8"	225	245-305	1490	70.5	293	16-35

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