HSK 25E Spindle, 40,000 RPM, 3.6hp, P/N 70B-25E-1


HSK 25E Spindle, 40,000 RPM, 3.6hp, P/N 70B-25E-1

HSK 25E ATC Spindle
Liquid Cooled, 3.6 hp, 17 pounds
ABEC 7 Bearings, 40,000 RPM
Sensor for Shaft Rotation and Tool Presence

More options available

Call for back order status or multiple order discount.


or send inquiries to sales@hsspindles.com


Paypal financing available

$6,200.00 $5,100.00

SKU: 70B-25E-1 Categories: , ,
  • Description
  • Additional information


HSK 25E Spindle (70B-25E-1)

The 70B-25E-1 spindle is a base mounted model. It comes with a HSK 25E clamp group.

Mounting: Base Style, Six M5 holes in bottom

HSK 25E Specs: Maximum collet size is ER16. The maximum tool shank is 10mm or 13/32″.

Maximum Speed: 40,000 rpm

Run-out: <.00008″ (.002 mm)

Horsepower: 3.6 hp (2.7 kW)

Cooling Method: Liquid Cooled, Max incoming temp. 95 F, Max pressure 1.5 BAR, Max Flow 0.5 GPM

Features: Purge Air, Cone clean, Two proximity sensors (shaft rotation and tool presence), Quick disconnect Harting connector for sensors

Options: If you need a spindle with these options, please call or fill out the contact form. A paypal invoice will be sent with the spindle cost with options.

A – Proximity Sensor for Open Chuck ($60)

B – Proximity Sensor for Closed Chuck ($60)

C – ABEC 9 Bearings run-out <.00005″ (.00127 mm) ($150)

D – Encoder for High Speed Operation – Speed limited to 37,000 rpm ($1,000)

E – Encoder for Low Speed Operation – Speed limited to 15,000 ($400)

F – RTD for front bearing support temperature monitoring ($75)

Country of Origin: USA – Design, developed and majority of parts manufactured in the USA

Compatibility : Giordano Colombo RA73 HSK C32, RA73 ISO 20, RC73 HSK E32RC73 ISO 20

HSD ES325-E25 .

Optional Mounting Plate: 70B-720-MP1  The mounting plate makes it easier to install the spindle and allows the spindle to be mounted where an HSD or Giordano Colombo spindle was mounted. 

Recommended VFD: VFD037B23A for up to 3.6 hp applications. This drive allows the motor to use full power. 

Optional VFD: VFD022B21A A little less expensive than the 5hp drive above and it operates on both single and three phase power so it can be used with residential power. The spindle will operate up to 3.3 hp. 

Dimension: Refer to Installation Dwg

3D Model: Download Step file here: 3D of the 70B-25E

Weight: 17 lbs

Notes: HSK tooling offers advantages over ISO tooling. Read here for more information.

HSK WorldHSK Links

Paypal financing available if approved by Paypal. Interest free if paid off in 6 months.


Additional information

Weight 7.5 kg
Dimensions 30 × 9 × 9 cm

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