Cordless Impact Wrench 1/2 Inch: Heavy Duty Guide

Cordless 1/2" Drive Range Hub

If you are specifying a cordless impact wrench 1/2 inch for a workshop, a fleet depot or a maintenance contractor, the four things that decide the model are loosening torque, anvil and body style, tool weight, and the battery platform your team already runs. This hub puts the whole range on one page — the 800 N·m CIW-112A alongside the 1,200 N·m and 1,700 N·m drive units and a 3/4" step-up — and shows where a heavy duty cordless impact wrench earns its price on truck, plant and rail fasteners instead of a compact body. Every model here is supplied on quotation, so kit contents, battery configuration and bulk requirements are agreed before the order is placed.

  • Three torque tiers 800 N·m, 1,200 N·m and 1,700 N·m of maximum loosen torque.
  • 1/2" drive focus One 3/4" heavy duty pistol model sits above the range.
  • Quote-based supply Kit, battery and volume terms confirmed per order.
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Master specification matrix

Rows are the 1/2" drive cordless models in the range. Fields that are not published on a model page are marked for confirmation rather than estimated — ask for the current datasheet with your enquiry.

Model Drive Max loosen torque Free speed Impact rate Weight Battery platform Standard bolt capacity Kit contents
CIW-112ABrushless, 3-position power regulator 1/2" 800 N·m / 590 ft-lb 2,400 rpm 2,000 bpm 4.62 lb MAKITA 18V Li-ion compatible 19 mm (3/4") Tool, battery, charger, BMC
1/2" 1,200 N·m modelMid-tier heavy duty 1/2" 1,200 N·m / 885 ft-lb Confirm with factory Confirm with factory Confirm with factory Confirm with factory Confirm with factory Confirm with factory
1/2" 1,700 N·m modelTop of the 1/2" range 1/2" 1,700 N·m / 1,253 ft-lb Confirm with factory Confirm with factory Confirm with factory Confirm with factory Confirm with factory Confirm with factory

Reading the table: torque decides whether the tool will release the fastener, free speed and impact rate decide how fast it works, and weight decides how long an operator can hold it overhead. Battery platform and kit contents decide what you must buy on top of the bare tool.

CIW-112A: the 800 N·m reference model

This is the model most workshops start with, and it is the one with the fullest published specification. Everything below is taken from the model page, so you can plan around it with confidence.

CIW-112A 1/2 inch cordless impact wrench with brushless motor
Free speed2,400 rpm
Impact rate2,000 bpm
Weight4.62 lb
Max torque800 N·m
Bolt capacity19 mm (3/4")
Sound level96 / 108 dBA

The CIW-112A is built around a brushless motor housed in a lightweight composite casing, using a light-size spring hammer impact mechanism. In practice that combination is what lets a 4.62 lb tool sit in the 800 N·m / 590 ft-lb class without the vibration and maintenance load of a brushed motor.

  • Two-way brake-stop on reverse The reverse mode brake-stop is designed to stop a loosened nut from spinning off the stud — a safety detail worth having when a wheel is at chest height.
  • 3-position power regulator Forward control with full reverse power, so the operator can drop to a lower setting on smaller fasteners instead of relying on trigger discipline alone.
  • Compact, high-visibility body Built for tight or dimly lit spaces, with a built-in LED light for dark areas of the bay or underbody.
  • Brushless, sealed in a composite casing Reduced maintenance and consistent power under demanding conditions, which matters on a tool that runs all day.

Battery platform and kit compatibility

Ownership cost sits in the battery platform and the kit, not the tool body. The CIW-112A is designed to run on a platform many workshops already stock, which changes the maths on a multi-tool order.

  • MAKITA 18V compatibility. The tool is stated as fully compatible with MAKITA 18V batteries, so existing packs on that platform can be shared across the crew.
  • Lithium-ion packs for longer running time between charges — relevant where a bay has more sockets than chargers.
  • Kit contents: the tool, a battery, a battery charger and a BMC case are all listed as part of the kit.
  • Built-in LED light for work in dark areas, so no separate work light is needed under a vehicle.
  • 19 mm (3/4") standard bolt capacity on a 1/2" drive anvil — the fastener ceiling to check against your job list.
  • Ergonomic handle and contoured grip to keep control through the impact cycle on a 4.62 lb body.
Confirm before you raise a purchase order: the exact battery and charger configuration for your destination, the charger input rating for your market (the model page lists 110/230 V, 50/60 Hz), and whether spare packs are wanted in the same shipment. These are order-specific details, not tool limitations.
CIW-112A cordless impact wrench kit with battery and charger CIW-112A cordless impact wrench handle and battery platform detail

Anvil type and body style: how to read a spec sheet

Two columns on a datasheet do more to decide day-to-day usability than any single torque figure. Here is what they mean and what to ask for.

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  • Pin detent anvilA spring-loaded pin locks into the socket's hole. The most secure hold, best where sockets must not drop from height, but slower to change sockets.
  • Ring / retaining ring anvilA sprung ring grips the socket wall. A good middle ground — firm retention with faster changes for mixed-size work.
  • Friction ring anvilRelies on friction alone. Fastest socket changes for repetitive single-size jobs, least secure for overhead work.
  • Pistol vs. straight bodyA pistol grip suits vertical and general engine-bay access; a straight body lines up along the fastener axis for bench and assembly work. Heavy duty pistols trade a little length for one-handed control.
  • Weight and fatigueEvery pound tells over a shift. A 4.62 lb body in the 800 N·m class is a deliberate choice for operators holding the tool at shoulder height.
Anvil type and body style are model-specific: the CIW-112A page does not state an anvil type, so confirm it for the exact model you intend to buy rather than assuming from this explainer. The same applies to any model whose page does not list the field.

Related Reading

Three notes to help clarify product requirements before contacting the supplier.

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Frequently Asked Questions

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