1 inch Air Impact Wrench
  • 1 inch Air Impact Wrench1 inch Air Impact Wrench
  • 1 inch Air Impact Wrench1 inch Air Impact Wrench
  • 1 inch Air Impact Wrench1 inch Air Impact Wrench
  • 1 inch Air Impact Wrench1 inch Air Impact Wrench
  • 1 inch Air Impact Wrench1 inch Air Impact Wrench

1 inch Air Impact Wrench

We are a Chinese factory specializing in WYMA® 1 inch Air Impact Wrenchs. How do we ensure reliability? We are ISO certified, and we use durable forged alloy materials to create industrial-grade pneumatic impact wrenches designed for automotive and heavy machinery high-torque applications, while also supporting bulk orders and customization. With over 15 years of professional air tool knowledge, we look forward to working with you to provide long-lasting and durable pneumatic wrench solutions.

WYMA® 1 inch Air Impact Wrench make of durable aluminum alloy with factory-direct pricing combines MD-CE certified. Since 1997, our vertically integrated production eliminates middlemen, delivering industrial performance at a competitive price. We stock large quantities each year to ensure fast worldwide delivery. Our factory handles production through to sales. This approach means we can closely monitor quality and costs for every impact tool we make.This tool is built to handle tough jobs demanding serious torque and precision control, day after day. We’ve demonstrated its strength ourselves, showing our air impact wrenches at the CIHF, CISMEF, and AIFME expos. Because of this commitment and proven performance, professionals across the globe rely on WYMA tools.


Product’s Parameter (Specification)

Model BOLT CAPACITY MAX. TORQUE FREE SPEED AIR PRESSURE WEIGHT
WM-3289 >M27(43mm) 2100 N.M 5500 RPM 90 PSI 4.0 kg
WM-3901 M18-M27(41mm) 1800 N.M 4600 RPM 1.0-1.3 Mpa 7.85 kg
WM-3902S >M27(48mm) 2800 N.M 4500 RPM 1.0-1.3 Mpa 13.9 kg
WM-3902L >M27(48mm) 2800 N.M 4500 RPM 1.0-1.3 Mpa 13.9 kg
WM-3904 >M27(50mm)
3000 N.M
5000 RPM
0.8-1.0 Mpa
6.5 KG
WM-3905 >M27(52mm) 3800 N.M 3800 RPM 1.0-1.5 Mpa 16.7 kg
WM-3906A >M27(46mm) 2400 N.M 3900 RPM 1.3 Mpa 9.25 kg
WM-3950S >M27(55mm) 4200 N.M 2800 RPM 0.8-1.0 Mpa 15.8 kg
WM-3950L >M27(55mm) 2800 N.M 2800 RPM 0.8-1.0 Mpa 17.2 kg
WM-3995S >M27(58mm) 5100 N.M 2800 RPM 0.8-1.0 Mpa 17.8 kg
WM-3995L >M27(58mm) 5100 N.M 2800 RPM 0.8-1.0 Mpa 19.8 kg
WM-3996 >M27(58mm) 5100 N.M 2800 RPM 0.8-1.0 Mpa 16.6 kg
WM-3998 >M27(70mm) 6200 N.M 2800 RPM 0.8-1.0 Mpa 17.7 kg
WM-8258 >M27(46mm) 2400 N.M 5500 RPM 0.8 Mpa 7.8 kg

Product’s Applications

WYMA® 1’’ Pneumatic Impact Wrench is engineered for heavy-duty torque demands across industries. Ideal for ‌heavy-duty vehicle assembly‌, ‌truck tire replacement‌, and ‌commercial automotive repair‌, it tackles large bolts in truck wheel hubs and chassis systems. In ‌industrial machinery installation‌ and ‌shipbuilding maintenance‌, this tool ensures efficient fastening of marine equipment and heavy mechanical components. Shops run on this wrench for heavy-duty tasks, it handles high-torque jobs like disassembling / assembling large cargo truck tires and driving tough assembly line fasteners reliably. It’s equally vital for tough construction equipment fixes,gritty mining machinery maintenance, and securing critical M20+ bolts on industrial pipelines delivering precision when you can’t afford mistakes.

Upgrade your shop with the WYMA Heavy-Duty Air Impact Wrench. Engineered for non-stop industrial use, it delivers precise, high-torque force reliably. The comfortable ergonomic grip makes a difference on long repairs. Get jobs done faster in automotive assembly, heavy equipment fixes, or plant maintenance.



1’’inch Air Impact Wrench1’’inch Air Impact Wrench


Product’s Feature And Details

WYMA vs. Other Brands: Core Advantage Comparison

Power & Structure

Other Brands: Bulky bodies with solid steel shafts prone to fatigue, single-hammer designs with outdated pin structures causing torque loss.

WYMA: Ultra-lightweight CNC-treated hollow spindle and twin hammer pinless structure for ultra torque up to 6000 N.M or more while reducing wrist strain.



1’’inch Air Impact Wrench


Air Chamber Design

Other Brands: Oversized external cylinders waste airflow, requiring higher air pressure for basic tasks.

WYMA: Compact recessed cylinder amplifies air pressure efficiency, delivering higher torque even at low air pressure.


Torque Control

Other Brands: Limited 1-2 speed settings with inconsistent reversing torque.

WYMA: 3-speed adjustable forward/reverse system adapts seamlessly to stubborn bolts or delicate assemblies.


Trigger Durability

Other Brands: Sticky buttons with poor ergonomics cause finger fatigue.

WYMA: Features a new streamlined trigger design that prevents jamming and sticking, while providing a comfortable and ergonomic grip.


Noise Reduction

Other Brands: Open exhaust ports generate 95dB+ noise pollution.

WYMA: Honeycomb muffler cuts noise to 78dB while accelerating airflow for smoother Air Impact Wrench operation.


Easy Maintenance

Other Brands: Complex disassembly needs for weekly grease replenishment.

WYMA: Before and after each use, drip 2-3 drops of pneumatic lubricant into the air inlet and then run it idle for a few seconds to complete the maintenance.


1’’inch Air Impact Wrench

Hose Safety

Other Brands: Cheap PU air hoses tend to burst under high pressure and require additional adapters

WYMA:PVC inner braided three-layer process air hose, sufficient air pressure supply and explosion-proof, can withstand 30kg high pressure also with a special connector. Available in black and gray. If use with a 1 inch pneumatic impact wrench, it is recommended to purchase a 13mm inner diameter.


1’’inch Air Impact Wrench


Hex Socket

Other brands: Poor surface quenching process, prone to breakage/wear under impact.

WYMA: Utilizes dual heat treatment for deep quenching, combined with integrated chrome molybdenum steel forging to ensure high toughness, wear resistance, and crack resistance. Features carbon black phosphating surface treatment for rust prevention and a special inner angle design that increases uniform contact area to prevent slipping and reduce nut edge wear. Covers full sizes 23-60mm with multi-model compatibility. Optional 1 inch air impact wrench socket set (22-41mm) available.


WYMA pneumatic impact wrench—Lighter, quieter, and more torque-efficient than rivals, engineered for mechanics who refuse to compromise.



1’’inch Air Impact Wrench1’’inch Air Impact Wrench1’’inch Air Impact Wrench1’’inch Air Impact Wrench



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