JH9 Portable CNC Spindle Taper Grinder

On‑Site Spindle Taper Hole Repair for BT30 / BT40 / BT50 Machining Centers

JH9 is a portable CNC taper hole grinding machine, specially developed to repair scratched, worn and crash‑damaged spindle taper holes on machining centers and drilling centers.

No need to disassemble the spindle from your machine. Complete all repair work directly on‑site in your workshop. Complicated programming is not required, one‑click automatic grinding function is available.
Only 17 kg lightweight design, easy to carry and use for different CNC machines. Compatible with BT30, BT40, BT50 standard spindle tapers.

JH9 Portable CNC Spindle Taper Grinder

On‑Site Repair for BT30 / BT40 / BT50 Machining Center Spindle Taper

JH9 is a portable automatic spindle taper grinding machine, built to restore worn, scratched or crash‑damaged spindle taper holes on machining centers. No complicated CNC programming is needed. It supports bidirectional fine‑tune angle mechanism to achieve precise taper grinding.

You do not need to take the spindle out of the machine. All repair work can be completed on‑site in your workshop, which greatly cuts the high cost of outsourcing spindle repair.

Key Features

‑ One‑click automatic grinding mode, manual / automatic dual working mode

‑ Safe DC24V control voltage, powered by AC 220V input

‑ Integrated air cooling and dust‑proof system, working air pressure: 0.5 MPa

‑ Built‑in LED work light for clear viewing during grinding

‑ Compatible with BT30, BT40, BT50 standard spindle tapers

‑ Hiwin linear guide and ball screw, stable 0.01 mm micro feed

‑ Max spindle speed up to 25000 RPM

‑ Lightweight 17 kg main body, easy to move among different CNC machines

Technical Specifications

Model: JH9 Spindle Taper Grinder

Overall Size: L225 mm × W210 mm × H (263+45) mm

Net Weight: 17 KG

Input Power: AC 220 V

Control Voltage: DC 24 V

Working Air Pressure: 0.5 MPa

Applicable Taper: BT30, BT40, BT50

Grinding Length: BT30:45 mm；BT40:65 mm；BT50:105 mm

Max Spindle Speed: 25000 RPM

Standard Accessories

‑ 24V power supply unit

‑ Air‑water separator

‑ 5 pcs standard grinding heads (consumable parts)

‑ Precision wheel dressing tool

Application Scenarios

Ideal for CNC machining workshops, mould factories and machine tool maintenance service providers.

Solves common failures: taper scratches, surface wear, collision deformation and tool holder run‑out over tolerance.

Warranty & After‑sales

12‑month warranty for the main unit. We provide free operation training and long‑term technical support. Spare parts can be supplied at cost after the warranty expires.

Contact us via WhatsApp for demo videos, specification sheet and quotation.

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