Dynabrade 53812 Straight-Line Die Grinder 0.7 HP
- .7 hp straight-line die grinder, 20000 rpm
- Gearless design, rear exhaust
- 1/4 inch and 6mm collets
- 1/4 inch NPT air inlet, non-vacuum
- Alloy steel housing, 2.3 lb
- Lifetime warranty with registration
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A gearless air die grinder with a steel housing and a choice of collet sizes, aimed at steel fabrication. It needs compressed air and registration at the maker site to qualify for the lifetime warranty.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B005TIUBR0Model: 53812Category: Power Grinders
Overview
A steel fabrication shop is the setting this Dynabrade straight-line die grinder is aimed at, with a gearless air motor and an alloy steel housing. Collets in two sizes and a quarter inch NPT air inlet are listed, and the exhaust exits from the rear.
A gearless motor with a durable housing makes it a working shop tool, and two collet sizes widen the bit choice. The limitation is that it needs a compressed air line and the horsepower and pressure data are only partly given.
Who it's for
Industrial users grinding steel in a shop will use the speed and the heavy housing. Hobbyists without an air system, or anyone who wants vacuum dust extraction, should look elsewhere.
Pros and cons
- Alloy steel housing
- Two collet sizes
- Lifetime warranty with registration
- Needs compressed air
- Not a vacuum tool
- Air consumption not listed
Performance notes
The air motor runs at a fixed top speed when the supply is sufficient, so hose size and compressor output shape the real result. A gearless design transfers power directly to the collet. Rear exhaust directs outflow away from the work and operator.
Specifications
| Brand | Dynabrade |
|---|---|
| Model | 53812 |
| Dimensions & fit | |
| Collet | 1/4 inch and 6mm |
| Item weight | 2.3 pounds |
| Capacity & performance | |
| Maximum Rotational Speed | 20000 rpmhigher than 64% of 95 power grinders |
| Power & efficiency | |
| Power Source | Air powered |
| Horsepower | .7 hp (from the title) |
| Construction & materials | |
| Material Type | Alloy steel |
| Color | Multi |
| Included components | |
| Included Components | Dynabrade Branded Product |
| Unit Count | 1 Count |
| Warranty & support | |
| Manufacturer Warranty Description | Lifetime warranty, tool must be registered at Dynabrade.com |
| Other details | |
| Style Name | Industrial |
| Air inlet | 1/4 inch NPT |
| Item Type Name | Dynabrade 53812: .7 Hp Straight-Line Die Grinder, Steel Housing |
Closest rivals on specs
Frequently asked questions
Is the Dynabrade 53812 an electric die grinder?
No. The power source is air powered, with a 1/4 inch NPT inlet.
Does the Dynabrade 53812 have vacuum collection?
No. The highlight line lists it as non-vacuum, with rear exhaust.
Which collets does the Dynabrade 53812 take?
The highlight line lists 1/4 inch and 6mm collets.
How do I get the lifetime warranty?
The tool must be registered at the Dynabrade website to qualify.