UAASKED-19WHS13 AC Spindle Motor Product Specification
UAASKED-19WHS13 is a heavy-duty externally forced air-cooled AC permanent magnet spindle motor developed and manufactured by Yaskawa Electric under the mature UAASKED product line, specially configured for super-large vertical machining centers, heavy-duty CNC turning lathes, oversized mold high-precision processing equipment and fixed heavy cutting stations on automated metalworking production lines. This motor adopts high-density stacked silicon steel stator core and high-performance rare-earth permanent magnet rotor structure, delivering ultra-wide constant-power speed regulation range, outstanding low-speed high-torque steady output and low-vibration stable high-speed running performance to adapt to frequent forward-reverse switching, intermittent heavy rough cutting and long-duration continuous finish machining of various ferrous and non-ferrous raw materials. Equipped with an independent external cooling fan assembly for forced convection heat dissipation, the unit effectively avoids overheat-triggered protective shutdown under long-term full-load heavy cutting working conditions. The suffix WHS13 stands for exclusive factory OEM customized configuration, including wide adaptive voltage winding design, high-precision serial digital feedback encoder and tailor-made dimensional parameters for output shaft and mounting flange. This customized specification variant cannot be directly replaced by standard 19-frame general spindle motors unless corresponding mechanical modification and complete servo drive parameter resetting are finished. Mass original new production of this model has been phased out, and available market stock mainly includes leftover factory original unused inventory and professionally refurbished motors which pass full standard aging and performance verification before aftermarket equipment maintenance replacement.
Description
UAASKED-19WHS13 AC Spindle Motor Product Specification
1. Product Overview
UAASKED-19WHS13 is a heavy-duty externally forced air-cooled AC permanent magnet spindle motor developed and manufactured by Yaskawa Electric under the mature UAASKED product line, specially configured for super-large vertical machining centers, heavy-duty CNC turning lathes, oversized mold high-precision processing equipment and fixed heavy cutting stations on automated metalworking production lines. This motor adopts high-density stacked silicon steel stator core and high-performance rare-earth permanent magnet rotor structure, delivering ultra-wide constant-power speed regulation range, outstanding low-speed high-torque steady output and low-vibration stable high-speed running performance to adapt to frequent forward-reverse switching, intermittent heavy rough cutting and long-duration continuous finish machining of various ferrous and non-ferrous raw materials. Equipped with an independent external cooling fan assembly for forced convection heat dissipation, the unit effectively avoids overheat-triggered protective shutdown under long-term full-load heavy cutting working conditions. The suffix WHS13 stands for exclusive factory OEM customized configuration, including wide adaptive voltage winding design, high-precision serial digital feedback encoder and tailor-made dimensional parameters for output shaft and mounting flange. This customized specification variant cannot be directly replaced by standard 19-frame general spindle motors unless corresponding mechanical modification and complete servo drive parameter resetting are finished. Mass original new production of this model has been phased out, and available market stock mainly includes leftover factory original unused inventory and professionally refurbished motors which pass full standard aging and performance verification before aftermarket equipment maintenance replacement.
2. Model Code Definition
UAASKED is the core base series code of Yaskawa heavy-load external fan-cooled AC spindle motor, where UA marks AC spindle classification, K represents external forced air cooling structural design, ED refers to enhanced heavy-load reinforced stator framework plus wide voltage optimized winding upgrade compared with conventional UAASKD series. The numeral 19 defines the large-size motor frame with S3 intermittent rated output power of 19kW as its core power grade. Letter W denotes wide-range adaptive three-phase input winding that fits multiple industrial power supply specifications; H stands for high-grade high-resolution feedback sensing component configuration; S represents serial digital encoder instead of traditional incremental pulse encoder for higher spindle positioning precision and rigid tapping stability. The last two digits 13 correspond to exclusive customer-customized mechanical specifications covering unique output shaft dimension and keyway size, dedicated flange mounting hole layout and fixed pin assignment of aviation connectors for power cable and encoder signal wiring, forming an independent exclusive specification separated from other standard 19-frame spindle motor products.
3. Electrical Performance Specification
This spindle motor is built with wide-range three-phase AC adaptive input winding and must be matched with original dedicated Yaskawa spindle servo drive to construct full-digital vector closed-loop speed and position control system. Its S3 intermittent rated output power reaches 19kW with matched rated operating current designed for extreme heavy cutting load, and the motor can produce up to 3 times instantaneous peak overload torque to absorb sudden impact load generated during rough machining of thick cast iron, high-carbon steel and oversized aluminum alloy blanks. The built-in high-precision serial encoder defined by HS coding continuously transmits real-time spindle rotation speed and angular position digital serial signals to the paired servo driver, fully supporting core CNC functions including high-precision rigid tapping, automatic spindle orientation positioning and constant peripheral speed cutting required for large-scale mold and heavy mechanical component precision machining. Internal stator winding complies with Class F international insulation standard and is pre-embedded with built-in temperature sensing probes; once sustained abnormal overload leads to winding overtemperature, the matched drive receives temperature alarm signal and automatically executes output power derating or safety cutoff to prevent permanent winding burnout damage. Integrated surge suppression circuits inside the motor restrain instantaneous voltage spikes and industrial electromagnetic interference induced by surrounding frequency converters and switching power equipment, ensuring stable operation under complicated factory power grid fluctuation environment.
4. Mechanical Structure and Environmental Application Requirements
The motor main housing is manufactured from integrated high-strength cast aluminum alloy with IP54 standard dustproof and splash-proof protection rating, cooperating with split external cooling fan module to realize efficient forced air heat dissipation, delivering far superior continuous heavy-load heat resistance capacity compared with natural cooling spindle motors. The front end is equipped with solid integral customized output shaft with exclusive flat keyway for rigid assembly with oversized synchronous belt pulley, heavy-duty reduction gearbox or direct-coupled machine tool spindle components; the rear casing reserves fixed installation space for WHS13 exclusive customized aviation plugs following factory fixed pin definition rules for power wiring and encoder signal connection. Standard flange mounting structure is adopted for machine assembly to achieve direct bolt locking on machine spindle box without extra transition fixture processing.
Valid continuous working ambient temperature ranges from 0°C to +40°C, while permissible storage temperature covers -20°C to +70°C; applicable working environment humidity is controlled between 5%RH and 80%RH under non-condensing condition to avoid internal metal corrosion and internal circuit short-circuit faults. When installation altitude exceeds 1000 meters above sea level, users need to properly reduce continuous operating load to compensate heat dissipation decline caused by decreased air density at high altitude. The motor can withstand regular industrial vibration within 10Hz to 55Hz frequency range, while installation and application in working sites with corrosive chemical gas, accumulated heavy oil mist and scattered conductive metal scraps are strictly prohibited to prolong service life of internal rolling bearings, stator winding and precision serial encoder components.
5. Application Scope and Routine Maintenance Specification
UAASKED-19WHS13 is widely adopted as core spindle driving unit for super-large vertical machining centers, heavy-duty CNC lathes, oversized mold engraving and milling machines and fixed heavy cutting processing stations on automated production lines, suitable for rough machining and finish precision processing of ferrous metal blanks, thick non-ferrous alloy workpieces and high-hardness industrial engineering plastic parts. During daily routine maintenance, equipment operators need regular cleaning for external cooling fan filter screen to eliminate dust clogging which would cause poor heat dissipation and unexpected over-temperature protection shutdown; periodic inspection on output shaft bearing lubrication state and aviation connector wiring fastening degree is required to avoid bearing oil leakage and loose wiring induced irregular spindle speed fluctuation. For breakdown replacement maintenance on production equipment, original matching serial encoder and exclusive WHS13 specification dedicated power cables must be selected; mismatched non-original replacement accessories will trigger invalid feedback signal and even out-of-control spindle runaway fault. All aftermarket refurbished spare motors will complete winding high-pot withstand voltage test, rotating component dynamic balance calibration and full-load continuous aging test in accordance with original factory technical standards before delivery to guarantee consistent performance parameters with brand-new original specification products.
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