GDZ93 Square Air Cooled Spindle Kit 3.0 KW ER20
Overview
The square air cooled spindle kit pairs a GDZ93 series square-body spindle motor with its matched VFD, aviation-plug cable and wrench, so the whole drive train arrives in one box. Square bodies mount flat against a Z-axis plate and take less depth than a round spindle of the same power, which is why they dominate router gantries and ATC-ready machine builds.
The 3.0 kW version runs at 18 000 rpm with an ER20 collet; 1.5 kW, 2.2 kW and 4.5 kW versions are available in the same family for different material removal rates.
Specifications - 3.0 kW square air cooled spindle
| Item | GDZ93×82-3 (220 V) | GDZ93×82-3 (380 V) |
|---|---|---|
| Model number | GDZ93×82-3 | GDZ93×82-3 |
| Power | 3.0 kW | 3.0 kW |
| Voltage | 220 V | 380 V |
| Electric current | 10.5 A | 6 A |
| Frequency | 300 Hz | 300 Hz |
| Rotational speed | 18 000 rpm | 18 000 rpm |
| Chuck | ER20 | ER20 |
| Gross / net weight | 6.9 kg / 6.5 kg | 6.9 kg / 6.5 kg |
| Cooling | Air cooled, rear fan through square body | Air cooled, rear fan through square body |
Mounting dimensions
| Dimension | Value |
|---|---|
| Body width | 93 mm |
| Body height | 82 mm |
| Overall length | 227 mm (9.84 in) including collet nut |
| Front flange length | 72.6 mm (2.88 in) |
| Mounting hole spacing | 30 / 35 / 35 / 35 mm along the base, 10 × Ø6.5 mm holes |
| Coolant-free clearance | Allow 100 mm behind the fan for exhaust |
What is in the kit
- Spindle motor with ER20 collet nut and wrench
- Matched VFD rated for the spindle current
- Aviation-plug power cable and shielded signal cable
- Pump and water-tank options for the water cooled versions
How to choose
- Power by material. 1.5 kW for sign making and light wood; 2.2 kW for general wood routing; 3.0 kW for hard wood and aluminium; 4.5 kW for deep cuts and production work.
- Voltage by site. 220 V single-phase is common in small workshops; 380 V three-phase reduces current to roughly 60% for the same power.
- Speed by tooling. This series runs at 18 000 rpm - smaller than the 24 000 rpm round spindles, which suits larger diameter cutters.
- Plan the Z plate. Square bodies need a flat machined face; check the 10 × Ø6.5 mm hole pattern matches your gantry.
FAQ
Is the VFD included?
Yes for the kit version - the VFD is matched to the spindle current and supplied with the aviation-plug cable.
Why 18 000 rpm instead of 24 000 rpm?
Square air cooled spindles use larger bearings and a bigger rotor; the lower speed rating gives more torque at the cutter for the same power.
Can it be mounted horizontally?
The body is designed for vertical Z-axis mounting with the fan at the top. For horizontal use, confirm airflow clearance with us first.
What collet sizes fit ER20?
ER20 accepts 1–13 mm shanks; collets are ordered separately.
Related products
Pair with our VFDs, ER collets and water cooled spindles.
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