What is the collet type?

It is the shaft end where the collet chuck can be directly attached to the spindle tip.

The collet chucking range is from φ0.5 to φ34, and commercially available tools such as Alps Tool, NT Tool, and Yukiwa Seiko can be used depending on the model.

*It is also possible to change to the desired shaft end.

Examples: AR collet (ALPSTOOL), FDC collet (NT Tool), quick-change stub holder (NT Tool), etc.

Collet, nut, and spanner are not included.

The output is about 0.1kW to 15kW, and the rotational speed can be up to MAX 60,000rpm.

It is also possible to change the motor mounting shape (leg mounting, tap mounting, flange mounting, mount mounting, etc.) according to the operating environment.

For the S235 series and S238 series, a grease cup for refueling is available (sold separately).

Please contact us for details.

S235series・S238series

S235
Type S235
Model A B
Output power 2.2kW 3.7kW
Poles 2P
Voltage 200V
Frequency 300Hz
Max.rpm 18,000rpm
Spindle nose NT TOOL/EMC-28(Φ3~Φ16)
Cooling Totally closed fan type
Lubrication
Grease refueling type
Distortion 0.005mm or less
Vibration V5(Amplitude 5μm or less)
S238
Type S238
Normal model A B C
High speed model AH BH CH
Output power 0.75kW 1.5kW 2.2kW
Poles 2P
Voltage 200V
Frequency 300Hz
Max.rpm

Normal model:18,000rpm
High speed model:30,000rpm

Spindle nose

Normal model
NT TOOL/EMC-28(Φ3~Φ16)

High speed model
ALPS TOOL /RX-12(Φ3~Φ12.5)

Cooling Totally closed fan type
Lubrication Grease refueling type
Distortion 0.005mm or less
Vibration V5(Amplitude 5μm or less)
Compatibility between new model and conventional model

By installing a dedicated base plate (sold separately), it is possible to replace the existing model.

Type Conventional  Center height Spindle nose Mounting pitch Flange mounting
S235 S933A/B
S238 S911D2
S891E

    …Compatible with conventional models of regular models
     ○…Compatible with conventional models by installing a dedicated base plate (sold separately)

S235C20・S257series

S235A

Type

S235
Model C20
Output power 5kW
Poles 2P
Voltage 200V
Frequency 300Hz
Max.rpm 18,000rpm
Spindle nose ALPS TOOL / AR-32
(φ3~φ20)
Cooling Totally closed fan type
Lubrication Grease refueling type
Distortion 0.005mm or less
Vibration V5(Amplitude 5μm or less)
257A
Type S257series
Model A
Output power 5.5kW
Poles 2P
Voltage 200V
Frequency 240/300Hz
Max.rpm 18,000rpm
Spindle nose YUKIWA YCC20
(φ20 or less)
Cooling Totally closed fan type
Lubrication Grease refueling type
Distortion 0.005mm or less
Vibration V5(Amplitude 5μm or less)

S252series・S255series

S252A
Type S252series
Model A
Output power 0.3kW
Poles 2P
Voltage 180V
Frequency 667Hz
Max.rpm 40,000rpm
Spindle nose ALPS TOOL / RX-6
(MAXΦ6)
Cooling Air cooled
Lubrication Grease refueling type
Distortion 0.002mm or less
Vibration V3(Amplitude 3μm or less)
S255
Type S255series
Model A B
Output power 0.4kW
Poles 2P
Voltage 200V
Frequency 667Hz 667/1,000Hz
Max.rpm 40,000rpm 40,000/60,000rpm
Spindle nose ALPS TOOL / RX-6
(MAXφ6)
Cooling Air cooled
Lubrication Grease refueling type
Distortion 0.002mm or less
Vibration V3(Amplitude 3μm or less)

S239series・S251series

S239B
Type S239series
Model B
Output power 3.7kW
Poles 2P
Voltage 200V
Frequency 300Hz
Max.rpm 18,000rpm
Spindle nose NT TOOL / EMC-28
(φ3~φ16)
Cooling Totally closed fan type
Lubrication Grease refueling type
Distortion 0.005mm or less
Vibration V5(Amplitude 5μm or less)
S251
Type S251series
Model A B
Output power 0.5kW 0.75kW
Poles 2P
Voltage 200V
Frequency 300Hz 500Hz
Max.rpm 18,000rpm 30,000rpm
Spindle nose ALPS TOOL / RX-10
(MAXφ10)
Cooling Totally closed fan type
Lubrication Grease refueling type Grease inclusion type
Distortion 0.005mm or less
Vibration V5(Amplitude 5μm or less)

Comparison between new model and conventional model

【Comparison of S235A and S933B】

  New type Conventional
S235A S933B
Weight 9.5kg 13kg
Size (L x H x W) 335 x 104 x 118 348 x 140 x 118
Distortion 5μm 10μm
Noise 76dB 88dB

【Comparison of S238C and S911D2】

  New type Conventional
S238C S911D2
Weight 6.8kg 10kg
Size(L x H x W) 295 x 95 x 90 333 x 140 x 110
Distortion 5μm 20μm
Noise 73dB 83dB

【Comparison of S251A and S913B25】

  New type Conventional
S251A S913B25
Weight 3.5kg 4.2kg

Size(L x H x W)

242 x 69 x65 291 x 65 x 65
Distortion 5μm 15μm
Noise 76dB 82dB