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High-speed Integrated Motor Spindle

New grease replenishing system supports 10 000 hours of maintenance-free performance

NSK’s new proprietary, environmentally friendly grease replenishing system deNveewlolyped Grease replenishment unit
automatically delivers a small quantity of grease into the bearing interior at
intermittent intervals.

Improved grease life Reduced energy consumption
Continuous fresh supply of lubricant to With air consumption lowered by at
components improves grease life. least 70%, as little as 50 NL/min of
air is required.

Ultra low noise Environmentally sound
Eliminates grating wind noise caused by No oil is consumed, and therefore no
oil-air lubrication and reduces noise level oil particles are released into the air.
to as low as 69 dB at 20 000 min–1.

Built-in motor structure results in low vibration

Direct-drive system with no gears or couplings produces low vibration.

Low vibration Simplified assembly
Provides improved quality in cut surface and extends Incorporating spindle shaft and motor into single unit
tool life. eliminates need for centering and aligning spindle shaft
and motor.
Compact
The spindle incorporates motor between bearings at front Easier maintenance
and rear and is therefore lighter and more compact than Unique cartridge structure allows components to be
direct-coupled units. quickly replaced.

Highly functional integrated motor delivers strong output

Motor mounted with FANUC NC gives the highest possible motor performance.
series

Cool running Winding switching system
Adopts optimum core shape design and state-of-the-art Winding switching system supports a wide power band
low iron loss material. Current ripple is lowered with range, from low to high speeds.
HRV2 control.

Type S at 20 000 min–1 Type L at 20 000 min–1

18.5kW (10min) 18.5kW (15min) 22kW (15min)
15kW (30min) 15kW (Cont) 18.5kW (Cont)
118Nm (25%)
11kW (25%) 11kW (Cont) 13
10 98 10 98Nm (15min) 98
80Nm (Cont)
7.5kW (Cont) 44
60Nm (15%)
42Nm (15min)
46Nm (25%) 36

31Nm (Cont) 29Nm (10min)
24Nm (30min)

18Nm (Cont)
Output, kW
Torque, Nm
Output, kW
Torque, Nm
22Nm (Cont)

12 12 1 11 9.8
1 9.8 8.8

7.2

9.5 6.2
5.3

2 300 6 000 1 800 5 000

1 750 3 748 15 000 1 500 4 000 8 000

100 1 000 10 000 20 000 100 1 000 10 000 20 000

Speed, min–1 Speed, min–1

Test amplifier: SPM-30i

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