DeWalt NA189010 Lower Blade Guard – Genuine OEM Replacement Miter Saw Blade Guard
Part Number: NA189010
Category: Miter Saw Parts → Blade Guard Components → Lower Blade Guards
Type: DeWalt NA189010 Lower Blade Guard – Genuine OEM Replacement Miter Saw Blade Guard
The DeWalt NA189010 Lower Blade Guard is a genuine OEM replacement lower blade guard designed for compatible DeWalt sliding compound miter saws. This spring-loaded guard automatically covers the lower portion of the saw blade when the saw is raised and retracts during cutting, helping protect the operator from accidental blade contact while maintaining clear cutting visibility. Manufactured to original equipment specifications, the NA189010 provides a direct-fit replacement for damaged or worn blade guards and supersedes the previous part number N027988.
Key Features & Benefits
- Part Number: NA189010
- Genuine OEM DeWalt replacement part
- Replacement lower blade guard for compatible miter saws
- Automatically covers the blade when the saw returns to its resting position
- Helps improve operator safety during use
- Durable molded guard construction
- Direct-fit OEM replacement
- Supersedes previous part number N027988
Technical Specifications
Part Number: NA189010
Manufacturer: DeWalt
Product Type: Lower Blade Guard
Application: Sliding Compound Miter Saw
OEM Part: Yes
Supersedes: N027988
Quantity: Sold Individually
Compatible Applications
The DeWalt NA189010 Lower Blade Guard fits compatible DeWalt miter saws, including:
DeWalt
- DCS781B
- DCS781X1
- DHS716 Type 20
- DHS790 Type 20
- DW716 Type 20
- DW716XPS Type 20
- DWS779 Type 20
- DWS780 Type 1
- DWS780 Type 20
- DWS782 Type 20
Always verify your saw model, type number, and original part number before ordering to ensure proper compatibility.
Function of the Lower Blade Guard
The NA189010 Lower Blade Guard is designed to:
- Automatically shield the lower portion of the saw blade
- Retract smoothly as the blade enters the workpiece
- Return to the closed position after each cut
- Help reduce the risk of accidental blade contact
- Support safe and efficient cutting operations
- Restore the factory blade guarding system
Common Signs Replacement Is Needed
Replace the lower blade guard if you notice:
- Cracked or broken guard
- Guard fails to return to the closed position
- Excessive wear or impact damage
- Binding or sticking during operation
- Missing guard
- Guard interferes with normal blade movement
A damaged or malfunctioning blade guard should be replaced immediately, as proper guard operation is essential for safe miter saw use.
Installation & Service Notes
Disconnect the saw from its power source or remove the battery before performing any maintenance.
Remove the blade and guard hardware as outlined in the manufacturer's service instructions. Carefully remove the damaged NA189010 Lower Blade Guard, inspecting the guard link, pivot points, spring, and mounting hardware for wear or damage before installing the replacement guard. Install the new guard in the original orientation and verify that it pivots freely and fully covers the blade when the saw is raised. Before returning the saw to service, cycle the cutting head several times by hand to ensure smooth guard operation without binding.
Important: Never operate a miter saw with a missing, damaged, or improperly functioning lower blade guard. Replace damaged safety components only with genuine OEM replacement parts.
Maintenance Recommendations
- Inspect the lower blade guard before each use.
- Keep pivot points free of sawdust and resin buildup.
- Verify the guard returns fully after every cut.
- Replace cracked or damaged guards immediately.
- Inspect the guard spring and linkage during routine maintenance.
- Use genuine OEM replacement parts to maintain factory fit, proper blade coverage, and long-term miter saw safety and performance.
