NLB-300 Internal Combustion Single Head Bolt Wrench
The NLB-300 internal combustion bolt wrench is suitable for loosening and tightening the bolts and nuts of railway track sleepers. This machine has a high impact force, centralized operation, and can meet the locking torque of rail fasteners, making it convenient and fast. A rotating four-wheel walking device has been installed on the base, which can walk on land or rail, making it easy to transport and an ideal tool for loosening or tightening rail sleeper nuts instead of heavy physical labor.

Spindle speed |
512r / min |
Max releasing torque |
≥ 300N.m |
Max tightening torque |
≥ 150 N.m |
Working efficiency |
≤ 10 pieces / min |
Diesel Engine |
F160 |
Rated power |
1.47kw (2HP) |
Rated speed |
2600r / min |
Machine weight |
68kg |
Overall size |
1300*510*760mm |









Our Customer and Exhibition




Q1:What's the payment term ?
A1:We accept T/T , L/C , D/P , WEST UNION , CASH , ETC .
Q2:How much deposit should i pay ?
A2:We accept 30% deposit and 70% balance , or we can negotiate .
Q3:What's the delivery time after I pay the deposit ?
A3:According to order quantity , usually for one set we can do delivery within 5-7days after receive deposit .
Q4:What kind of package do you provide ?
A4:We provide standard exporting packing ,using wooden box or carton .
Q5:How can I get the goods ?
A5:We can send you by air or by sea depend on your requirement . We will help find cheapest and safest ship company do send you goods and tell you how long time you can receive as also send you shipping documents . By the way we keep follow the tracking information until you get the goods at your hand .
Q6:Do you have product user in my country ?
A6:Our products have exported to more than 20 countries , some countries have our sales agent ,we can give you contact for you to talk and check with them .
Q7:How long of your machine quality guarantee terms ?
A7:Quality guarantee time is one year(wearing parts excluded).
Q8:Do you provide sample and customized service ?
A8:Yes.