DW557 - Rotary hammer DEWALT - Free user manual and instructions
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| Product Type | Rotary Hammer |
| Brand | DEWALT |
| Model | DW557 |
| Power Supply | Corded Electric, 120V AC |
| Power Consumption | 7.5 Amps |
| Impact Energy | 2.6 ft-lbs |
| No-Load Speed | 0-1,500 RPM |
| Impact Rate | 0-5,800 BPM |
| Chuck Type | SDS-Plus |
| Drilling Capacity (Concrete) | 1-1/8 inches |
| Drilling Capacity (Steel) | 1/2 inch |
| Drilling Capacity (Wood) | 1 inch |
| Operating Modes | Hammer Drilling, Drilling Only, Hammer Only |
| Variable Speed Trigger | Yes |
| Reversible | Yes |
| Side Handle | Yes, with depth rod |
| Cord Length | 8 feet |
| Weight | 6.2 pounds |
| Dimensions (L x H) | 14.5 x 9.5 inches |
| Maintenance | Replaceable carbon brushes |
Frequently Asked Questions - DW557 DEWALT
What type of drill bits does the DEWALT DW557 use?
The DW557 uses SDS-Plus bits, which are easily inserted without a key. Simply push the bit into the chuck until it clicks for a secure fit.
Can the DW557 be used for chipping applications?
Yes, the DW557 features a hammer-only mode that enables chipping and light demolition work when used with appropriate chisel bits.
How do I reverse the rotation direction?
Use the reversing lever located above the trigger to change the rotation from forward to reverse for removing stuck bits or driving screws.
What is the maximum drilling capacity in concrete?
With a solid carbide bit, the DW557 can drill up to 1-1/8 inches in concrete. For smaller holes, it operates efficiently with standard SDS-Plus bits.
How do I clean and maintain the rotary hammer after heavy use?
After use, blow out dust with compressed air, wipe the exterior with a damp cloth, and periodically apply a small amount of gear grease to the SDS chuck. Replace worn carbon brushes as needed.
What safety equipment should I wear when operating the DW557?
Always wear safety glasses, ear protection, and a dust mask. Use the side handle to maintain control and avoid contact with buried wires by checking a voltage detector.
How do I install the side handle and depth rod?
Loosen the side handle clamp, slide it onto the collar, rotate to the desired position, and tighten. Insert the depth rod into the hole on the handle and set it to the required drilling depth.
Is the DW557 suitable for overhead drilling?
Yes, its lightweight design and ergonomic grip make it suitable for overhead tasks. However, ensure the auxiliary handle is installed for safety.
Can I use the DW557 for drilling into metal or wood?
Yes, in drill-only mode, the DW557 can drill into steel and wood using appropriate twist bits with a SDS-Plus adapter or by using a chuck adapter.
Where can I purchase replacement carbon brushes for the DW557?
Genuine DEWALT brushes are available through authorized service centers or online retailers. Part numbers are listed in the user manual; always use factory components to retain performance.
User questions about DW557 DEWALT
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USER MANUAL DW557 DEWALT
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Product information
Brand : DEWALT
Model : DW557
Category : Rotary hammer