SUNTECH SM-52-5300 90 Degree Air Die Grinder 1/4 Inch
- Maximum Rotational Speed: 20000 rpm
- Power Source: Pneumatic
- Manufacturer Warranty Description: NO WARRANTY
- Voltage: 120 volts
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact air powered grinder at 20000 RPM and about 1.1 pounds, a reasonable pick for shops already set up with compressed air for detail grinding work.
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ASIN: B018AOWL2MModel: SM-52-5300Category: Power Grinders
Overview
Air powered and compact, the SUNTECH SM-52-5300 grinder reaches 20000 RPM in a 6.5 x 1.6 x 3 inch body weighing 0.5 kilograms, about 1.1 pounds.
Air powered tools like this one run off a shop compressor rather than a battery or electrical cord, which typically allows a lighter, smaller housing since the motor itself is compact. The listing also carries a 120 volt figure, which does not fit an air powered tool and looks like a leftover field from the listing template rather than a real spec, so it is left out here.
- Air powered motor
- 20000 RPM speed
- 0.5 kilogram weight
- 6.5 x 1.6 x 3 inch size
Who it's for
Fits shop environments that already run compressed air lines, for detail grinding, deburring, or polishing work where a small pneumatic tool is easier to maneuver than a full-size electric grinder. Not usable without an air compressor on hand.
Pros and cons
- Light 0.5 kilogram body for control in tight spaces
- Compact 6.5 x 1.6 x 3 inch footprint
- High 20000 RPM speed for detail grinding
- Requires a shop air compressor to operate
- No air pressure or CFM requirement listed
Performance notes
At 20000 RPM and a light 0.5 kilogram body, this is built for control on detail work rather than heavy stock removal. Its small 6.5 x 1.6 x 3 inch footprint suits tight spaces where a larger grinder would not fit.
Specifications
| Brand | SUNTECH |
|---|---|
| Model | SM-52-5300 |
| Dimensions & fit | |
| Item Weight | 1.1 poundslower than 81% of 107 power grinders |
| Dimensions | 6.5 × 1.6 × 3 inches |
| Capacity & performance | |
| Maximum Rotational Speed | 20000 rpmhigher than 70% of 122 power grinders |
| Minimum Speed | 20000 rpm |
| Power & efficiency | |
| Power Source | Pneumatic |
| Voltage | 120 voltshigher than 52% of 103 power grinders |
| Construction & materials | |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Manufacturer Warranty Description | NO WARRANTY |
| Other details | |
| Style Name | Angled |
| Item Type Name | 1/4" 90 Degree Angle Die Grinder |
Closest rivals on specs
NEIKO 30060A Right Angle Air Die Grinder 1/4 Inch- Item Weight 1.1 vs 1 pounds (+10%)
Makita XAG25Z 18V LXT Brushless X-Lock Angle Grinder- Item Weight 1.1 vs 1 pounds (+10%)
AEROPRO AP17315 Angle Air Die Grinder 1/4 Inch- Item Weight 1.1 vs 1 pounds (+10%)
Frequently asked questions
Does the SUNTECH SM-52-5300 need a compressor?
Yes, it is air powered and requires a shop air supply to run.
How much does it weigh?
0.5 kilograms, about 1.1 pounds.
Why does the listing mention 120 volts if this is an air tool?
That figure does not fit an air powered tool and appears to be a leftover listing field rather than an actual spec.