21V Pure Copper Brushless Impact Wrench GKR05 for Railway and Industrial Bolting
SEO Title: 650 N.m Pure Copper Brushless Impact Wrench 21V Cordless
Meta Description: GKR05 21V brushless impact wrench delivers 650 N.m torque and 0-4000 r/min speed with a pure copper motor and Makita 10-cell 2000mAh battery for heavy bolting.
URL Slug: gkr05-21v-brushless-impact-wrench
Product Summary
The GKR05 is a 21V cordless impact wrench built around a pure copper brushless motor and an actual torque output of 650 N.m. It is powered by a Makita 10-cell, 2000mAh lithium-ion power battery and runs at a no-load speed of 0-4000 r/min. The housing combines ABS, aluminum alloy, steel and copper components, and the tool carries CE (EMC) and UKCA certifications. This makes it a practical choice for railway engineering and maintenance, automotive and transportation, construction steelwork, shipbuilding and heavy machinery assembly.
Key Features
- 650 N.m actual torque — enough driving force to loosen and tighten heavy-duty bolts in railway, steel structure and machinery work.
- Pure copper brushless motor — reduces carbon-brush wear for longer service intervals and steady output at 0-4000 r/min.
- 21V Makita 10-cell 2000mAh battery configuration — lithium-ion power battery platform designed for repeatable, rechargeable jobsite use.
- CE (EMC) and UKCA certified — tested to EN IEC 55014-1/2 for the EU market and BS EN 62841 series for UK supply.
- Mixed-material build — ABS housing with aluminum alloy, steel and copper internals for durability under daily industrial handling.
Technical Specifications
| Parameter | Value |
|---|
| Product Model | GKR05 |
| Product Type | Impact Wrench |
| Voltage | 21V |
| Motor Type | Pure copper brushless motor |
| Actual Torque | 650 N.m |
| No-load Speed | 0-4000 r/min |
| Battery Type | Lithium-ion power battery |
| Battery Cell Specification | Makita 10 cells * 2000 |
| Battery Capacity | 2000mAh |
| Materials | ABS, aluminum alloy, steel, copper |
Models and Options
The impact wrench is offered under model GKR05, supplied with a 21V lithium-ion battery configured as Makita 10 cells * 2000mAh. Buyers can confirm the battery configuration and accessory requirements against this model when placing an order.
Materials and Structure
The outer housing uses ABS for impact resistance, while the internal drive and motor components combine aluminum alloy, steel and copper. The pure copper brushless motor sits at the center of the structure, supported by a 21V lithium-ion battery pack. This layered build keeps the tool workable in daily industrial and maintenance environments.
Applications
- Railway engineering and maintenance
- Automotive and transportation repair
- Construction and steel structures
- Heavy machinery and equipment manufacturing
- Energy and petrochemicals
- Shipbuilding and marine engineering
- Mining and metallurgy
- Light industry and DIY
Customization
The wrench can be supported by our available certifications, including CE (EMC), UKCA and CMA. As a manufacturer with a 40,000 m2 production base and a 25-engineer R&D team, we provide OEM service; please contact us to discuss your specific configuration and packaging requirements.
Frequently Asked Questions
What is the actual torque of this impact wrench?
The GKR05 has an actual torque of 650 N.m.
What motor does it use?
It uses a pure copper brushless motor.
What battery configuration does the tool run on?
It runs on a 21V lithium-ion power battery configured as Makita 10 cells * 2000, with a battery capacity of 2000mAh.
What is the no-load speed?
The no-load speed is 0-4000 r/min.
Which certifications does the product carry?
It is CE certified for EMC (EN IEC 55014-1/2) and UKCA certified, and CMA testing documentation is also available.
What materials are used in the housing and internals?
The tool uses ABS, aluminum alloy, steel and copper.
Which industries is it suitable for?
It suits railway engineering and maintenance, automotive and transportation, construction and steel structures, heavy machinery, energy and petrochemicals, shipbuilding and marine engineering, mining and metallurgy, and light industry and DIY.
Can I request OEM or a customized configuration?
Yes. As a manufacturer with a 40,000 m2 production base and a 25-engineer R&D team, we provide OEM service. Contact us with your requirements.
Inquiry Information
Contact: Flora
Email: Flora@gearpioneer.com
Tel / WhatsApp: +86 135-9954-5996
Send us your torque, battery or application requirements and we will respond with product details for the GKR05 21V brushless impact wrench.
Image Filename and Alt Suggestions
gkr05-21v-brushless-impact-wrench-overview.png — GKR05 21V brushless impact wrench product view
gkr05-pure-copper-brushless-motor.png — GKR05 impact wrench with pure copper brushless motor
gkr05-battery-10-cell-2000mah.png — GKR05 wrench with 21V Makita 10-cell 2000mAh battery
gkr05-railway-maintenance-bolting.png — GKR05 impact wrench used in railway track maintenance
gkr05-railway-fastening-detail.png — GKR05 impact wrench fastening rail components on site
