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Metal dividing head with 100 mm three-jaw chuck, 65 mm center height, 6:1 gear ratio, NEMA 23 stepper motor and MT2 tailstock

VEVOR

VEVOR BS4-KP100-57 Dividing Head 100 mm Chuck 65 mm Center Height 6:1 Ratio

SKU CH-0H0C-AXVWY

A CNC 4th-axis indexing head with a 100 mm 3-jaw chuck, 65 mm centre height and 6:1 gear ratio for precise rotational machining

  • TypeOther Appliances
  • Width10.63
  • 4th-axis rotation carves complex curves and angles
  • 6:1 gear ratio expands indexing range and smooths motor motion
  • K11 100 mm three-jaw chuck grips 2–30 mm internal and 30–80 mm external
  • 65 mm center height with MT2 tailstock supports stable workpiece alignment
  • Nema23 stepper motor at 3.75 V and 2.5 A delivers precise rotational control

CNC Rotational 4th Axis

The VEVOR BS4-KP100-57 dividing head adds a 4th axis to CNC routers and milling machines, allowing multi-angle machining of curved or angular parts. It suits workshops and makers who need precise rotational indexing for engraving or complex component fabrication.

6:1 Gear Ratio and Stepper Motor

A 6:1 reduction ratio lowers motor rotation speed, expanding the range of indexing angles and improving positioning accuracy. The integrated Nema23 2-phase stepper motor runs at DC 3.75V, 2.5A, and its reduced speed cuts vibration and noise for smoother operation.

Bundled Tailstock and Accessories

The package includes an MT2 tailstock with rotating thimble, K11 100 mm 3-jaw chuck, three card plate anti-claw pieces, a T-wrench, numerical control cable and user manual. These items enable immediate workholding, alignment and connection to the CNC controller.

Highlights

  • 4th-axis rotation carves complex curves and angles
  • 6:1 gear ratio expands indexing range and smooths motor motion
  • K11 100 mm three-jaw chuck grips 2–30 mm internal and 30–80 mm external
  • 65 mm center height with MT2 tailstock supports stable workpiece alignment
  • Nema23 stepper motor at 3.75 V and 2.5 A delivers precise rotational control

Specifications

TypeOther Appliances
Width10.63

Questions about this item

How do I mount the dividing head with its 65 mm center height on my CNC table, and what step is often missed?

Bolt the base using the 10.63 in width footprint, then seat the MT2 tailstock and lock the thimble — skipping the tailstock alignment causes run-out.

Which parts of the K11-100 mm chuck and gear train will need service or replacement over time?

The 3-jaw chuck jaws, MT2 thimble, and 6:1 gear set wear with use; the three card-plate anti-claw pieces are sacrificial and should be kept as spares.

What is the first limitation I will hit during long 4th-axis jobs with the Nema23 motor running at 2.5 A?

The DC 3.75 V, 2.5 A supply caps continuous torque, so extended heavy cuts will stall the motor before thermal limits appear.

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