DeWALT Impact Wrench - DCF899N
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B&QB&Q - 18V Dcf899N Xr High Torque Impact Wrench Li-Ion 1/2" Bare + Tstak Inlay
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Product Information
Full details
The DeWALT DCF899 XR Brushless High Torque Impact Wrench is designed for professionals and serious DIYers tackling heavy-duty fastening tasks. Its key benefit is delivering immense torque (950Nm tightening, 1625Nm breakaway) for demanding applications. A primary caveat is that this is a bare tool, requiring separate purchase of batteries and a charger. This tool excels with its variable speed and torque settings, powerful brushless motor, and durable construction for construction, automotive, and machinery maintenance.
All features
| Model Part Number | DCF899N |
|---|---|
| Brand | DeWalt |
Extended Product Information
FAQs
What is a 'bare tool' and what do I need to buy separately?
A 'bare tool' means the main unit is supplied, but consumables like batteries and chargers are not included. You will need to purchase a compatible DeWALT 18V XR battery and charger separately to operate this impact wrench.
How do I select the correct speed and torque setting?
The DCF899 has a switch that allows you to cycle through three different speed and torque settings. Consult the product manual for specific recommendations, but generally, use lower settings for delicate tasks or initial fastening and higher settings for breaking loose stubborn bolts or final tightening.
What is the difference between tightening torque and breakaway torque?
Tightening torque (950Nm) is the force the tool applies to fasten a bolt. Breakaway torque (1625Nm) is the force the tool can exert to loosen a bolt that is already tightened.
Can I use this tool for everyday tasks or is it only for heavy-duty work?
While capable of heavy-duty tasks, the variable settings allow for use in lighter applications. However, its power means you must use the appropriate lower settings to avoid damaging fasteners or materials.
How long does a battery typically last?
Battery life depends on the amp-hour (Ah) rating of the battery used and the intensity of the application. Higher Ah batteries will provide longer runtimes. Heavy tasks will drain batteries faster than lighter ones.
What type of sockets should I use with this impact wrench?
You should use impact-rated sockets designed for use with impact wrenches. Standard sockets can shatter under the high torque and impact forces.
Does this tool come with a case?
This model includes a Tstak Inlay for organization within a Tstak II Case. The case itself is typically sold separately or as part of a kit.
Troubleshooting
Tool does not power on.
Ensure a fully charged battery is properly inserted. Check battery contacts for dirt or damage. Try a different known-good battery.
Reduced power or torque.
Check the battery charge level; a low battery can reduce performance. Ensure the motor vents are clear. Check the socket for damage or improper fit.
Impacts are inconsistent.
Verify that the speed/torque setting is appropriate for the task. Ensure the socket is fully seated on the fastener. Check for any obstructions in the tool's mechanism.
Tool gets excessively hot during use.
Allow the tool to cool down. Ensure ventilation slots are clear of debris. Reduce the duration of continuous heavy use or use lower torque settings when possible.
Pros and Cons
Pros
- Exceptional torque for heavy-duty tasks
- Variable speed and torque control for versatility
- Durable construction suitable for professional use
- Brushless motor technology for longevity and efficiency
- Comfortable grip for prolonged operation
Cons
- Bare tool only; battery and charger sold separately
- High torque can be overwhelming for lighter tasks without careful setting selection
- Can be heavy for overhead or prolonged awkward angle work
Setup, Compatibility & Care
Setup: As a bare tool, the DCF899 requires a compatible DeWALT 18V XR battery (not included). Ensure the battery is fully charged and correctly inserted into the tool's battery housing until it clicks into place. Select the appropriate speed and torque setting using the switch located near the trigger.
Compatibility: This tool is compatible with all DeWALT 18V XR Li-Ion batteries. It uses standard 1/2" impact sockets.
Care: To maintain optimal performance and longevity:
- Cleaning: Wipe down the tool body with a dry or slightly damp cloth after use. Avoid using solvents.
- Storage: Store the impact wrench in a dry environment, preferably in its Tstak inlay within a compatible case to protect it from dust and damage.
- Motor Vents: Ensure the ventilation slots are kept clear of debris to prevent overheating.
- Battery Maintenance: Follow DeWALT's guidelines for battery charging and storage.