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Compact grey metal drill-bit sharpener with collet chuck and two grinding wheels

VEVOR

VEVOR MR-13B Drill Bit Sharpener 3-13mm 11 Collets CBN SDC Wheels

SKU CH-38NV-M8HGN

Sharpens 3–13 mm drill bits with adjustable 95°–135° point angle and four lip relief angles using CBN or SDC wheels

  • TypeOther Appliances
  • Width7.87
  • Sharpens 3-13mm bits with 11 collets for wide compatibility
  • Adjustable 95°-135° point angle matches material and speed needs
  • CBN wheel for HSS and SDC wheel for carbide materials
  • 120W motor at 4500 RPM delivers consistent grinding power
  • DIY lip relief via positioner pins creates four angle options

Precision Drill Bit Sharpener 3-13mm

The VEVOR MR-13B sharpens twist drills from 3 mm to 13 mm using eleven elastic collets and a supplied collet chuck. Adjustable point angles from 95° to 135° let the operator match the geometry to the workpiece material. Four selectable lip relief angles are set with the positioner pins for additional control.

Thermal and Power Characteristics

Rated power is 120 W at 4500 RPM, so the motor runs cool during typical sharpening sessions. The 45# steel housing dissipates heat without active cooling, keeping noise low enough for a workshop bench. Only the two grinding wheels contact the bit, limiting power draw to the rated figure.

Build Integration and Workflow

The unit measures 285 x 135 x 160 mm and weighs 8.6 kg, so it sits securely on a bench without permanent mounting. Supplied M4 and M2.5 hex wrenches handle wheel changes between the pre-installed CBN wheel for high-speed steel and the SDC wheel for tungsten carbide. No external coolant system or dust extraction is included, so operators should plan for swarf collection separately.

Highlights

  • Sharpens 3-13mm bits with 11 collets for wide compatibility
  • Adjustable 95°-135° point angle matches material and speed needs
  • CBN wheel for HSS and SDC wheel for carbide materials
  • 120W motor at 4500 RPM delivers consistent grinding power
  • DIY lip relief via positioner pins creates four angle options

Specifications

TypeOther Appliances
Width7.87

Questions about this item

How do I set up the MR-13B sharpener and which step is often missed?

Place the unit on a stable bench, select the correct collet from the 11 supplied (3–13 mm), secure the bit in the collet chuck, set the point angle between 95° and 135°, then choose the CBN wheel for HSS or the SDC wheel for tungsten carbide; the step most users skip is tightening the collet chuck fully before grinding.

What consumables will need replacement and how often?

The CBN and SDC grinding wheels wear with use; replace a wheel when its cutting surface feels smooth or when the bit no longer sharpens cleanly — frequency depends on how many bits you re-sharpen and the material hardness.

What limits continuous sharpening sessions on this 120 W, 4500 RPM machine?

The motor is rated at 120 W and 4500 RPM; prolonged non-stop grinding builds heat in the housing, so pause between bits to let the unit cool and maintain consistent sharpening quality.

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