YASKAWA UAJPEA-22BAGFU AC Servo Motor Specification
UAJPEA-22BAGFU is an original Yaskawa UAJPE series alternating current servo motor specially engineered for CNC turret drive applications on precision lathe equipment. Widely pre-installed on Tsugami, Mazak and Miyano CNC turning machines for turret indexing and positioning drive, this motor has been officially discontinued by the original manufacturer, with available stock mainly consisting of used disassembled spare units and professionally refurbished components from retired industrial machinery. Built with conventional laminated iron core stator and rotor structure, the unit is optimized to deliver stable low-speed high torque output, outstanding repeated positioning accuracy and reliable frequent forward-reverse rotation performance to satisfy the rigorous indexing and locking motions of machine tool turret systems. It features fully enclosed housing with IP54 protection grade and passive natural convection cooling without auxiliary cooling fan, while an integrated factory-fitted incremental rotary encoder is embedded at the rear end to provide closed-loop position feedback for servo control. No built-in electromagnetic power-off holding brake is equipped in standard configuration. BAGFU suffix represents factory customized specification covering exclusive encoder pin assignment, rear connector layout, output shaft dimensional tolerance and internal winding parameters, which differentiates this variant from other same-frame counterparts such as BAGFB and BAGFK.
Description
YASKAWA UAJPEA-22BAGFU AC Servo Motor Specification
1. Product Overview
UAJPEA-22BAGFU is an original Yaskawa UAJPE series alternating current servo motor specially engineered for CNC turret drive applications on precision lathe equipment. Widely pre-installed on Tsugami, Mazak and Miyano CNC turning machines for turret indexing and positioning drive, this motor has been officially discontinued by the original manufacturer, with available stock mainly consisting of used disassembled spare units and professionally refurbished components from retired industrial machinery. Built with conventional laminated iron core stator and rotor structure, the unit is optimized to deliver stable low-speed high torque output, outstanding repeated positioning accuracy and reliable frequent forward-reverse rotation performance to satisfy the rigorous indexing and locking motions of machine tool turret systems. It features fully enclosed housing with IP54 protection grade and passive natural convection cooling without auxiliary cooling fan, while an integrated factory-fitted incremental rotary encoder is embedded at the rear end to provide closed-loop position feedback for servo control. No built-in electromagnetic power-off holding brake is equipped in standard configuration. BAGFU suffix represents factory customized specification covering exclusive encoder pin assignment, rear connector layout, output shaft dimensional tolerance and internal winding parameters, which differentiates this variant from other same-frame counterparts such as BAGFB and BAGFK.
2. Model Code Definition
UAJPEA serves as the base series code for turret-dedicated AC servo motors of Yaskawa UAJPE product line; numeric code 22 denotes standard frame size corresponding to 750W rated continuous output power. The letter B stands for factory integrated built-in incremental encoder for closed-loop position feedback; A indicates standard flange mounting configuration and regular solid output shaft with standard dimensional specification; G signifies integrated rear aviation-style multi-pin connector wiring structure instead of loose flying lead cabling; FU is the customized variant suffix defining dedicated encoder wiring definition, customized shaft machining tolerance and unique internal winding layout set per original factory production standard. Due to distinct connector pinout and encoder parameters, direct interchange with other suffix variants is impossible unless full connector rewiring and complete servo parameter reset are completed on site.
3. Electrical Specifications
This AC servo motor is designed for three-phase 200V input industrial power supply matching vintage dedicated Yaskawa servo drive units configured for CNC turret control systems. Continuous rated output power is fixed at 750W, with rated operating current defined per factory standard specification under nominal full-load working conditions and rated base speed set to fit typical turret indexing operational requirements. Instantaneous peak overload torque can reach three times the rated torque to endure short-time impact load during turret clamping and emergency positioning actions. The embedded incremental encoder adopts exclusive factory-defined pin configuration for position feedback signal transmission, which cannot be replaced by non-FU specification encoder assemblies without complete wiring modification and drive parameter recalibration. Internal stator winding is manufactured following Class F insulation standard, with built-in thermal detection element transmitting overheat alarm signal to paired servo amplifier to trigger automatic overload shutdown and protect winding from thermal burnout. Surge suppression components are arranged inside terminal cavity to restrain industrial transient voltage spike and electromagnetic interference generated by nearby inverter and switching devices inside machine tool electrical cabinet.
4. Mechanical and Environmental Specifications
The fully sealed motor housing complies with IP54 ingress protection standard and dissipates heat entirely via shell natural convection without extra cooling fan installation. Front driving end is standard solid output shaft with integrated flat keyway for rigid coupling with turret intermediate gear or reduction transmission mechanism. Unified standard flange mounting dimension enables direct bolt fastening onto turret housing without additional transition fixture, and the overall net weight is fixed per original factory design for the 22 frame specification.
Valid continuous working ambient temperature ranges from 0°C to +40°C; permissible long-term spare part storage temperature spans -20°C to +70°C; applicable working relative humidity is maintained between 5%RH and 80%RH under non-condensing environment to avoid dew accumulation leading to internal circuit short-circuit damage. When installation altitude exceeds 1000 meters above sea level, continuous operating load needs appropriate deration to compensate decreased heat dissipation efficiency under thin atmospheric condition. The motor can withstand standard industrial vibration within 10Hz to 55Hz frequency range; installation locations with heavy cutting fluid splash, corrosive oil mist and dense conductive metal powder are forbidden to extend service life of front bearing, internal winding and rear encoder components.
5. Drive Matching and Control Functions
UAJPEA-22BAGFU is originally matched with dedicated Yaskawa vintage servo drives customized for CNC turret control, supporting common control command formats including analog voltage instruction and pulse position command delivered from machine tool CNC host system. The matched servo system supports seamless switching between position closed-loop control and speed closed-loop control to fulfill fast turret station indexing, accurate positioning and mechanical locking functions required by turning machining processes. Without built-in power-off holding brake, vertical or inclined mounted turret structures rely on external mechanical locking structure of the turret itself to prevent accidental rotation after unexpected power failure. Since incremental-type encoder is equipped without absolute position storage function, origin homing operation must be executed after full system power cut before formal turret automatic indexing operation to restore accurate mechanical zero position of the turret.
6. Protection and Fault Alarm Description
Multi-layer comprehensive safety protection is realized through coordination between internal thermal sensing elements and paired servo amplifier. Winding over-temperature signal triggers servo automatic overload shutdown to prevent winding thermal damage; poor contact or open circuit of BAGFU dedicated encoder connector activates independent encoder fault warning displayed on servo panel; winding short-circuit and abnormal overcurrent input lead to hardware overcurrent protection and immediate main power cutoff. All encoder feedback signal circuits are equipped with noise filtering components to filter complex electromagnetic interference from machine tool peripheral circuits and guarantee stable position feedback transmission during long-cycle continuous production operation.
7. Maintenance and Replacement Guidance
Direct on-site equipment replacement requires identical original UAJPEA-22BAGFU spare motor unit; same-frame motors with different suffix specifications such as BAGFB or BAGFK cannot be directly substituted unless full connector rewiring and complete servo parameter reset and commissioning are finished after installation. Before disassembling motor for bearing inspection or encoder maintenance work, maintenance operators must fully cut off three-phase main power supply and wait no less than 15 minutes for full discharge of servo internal DC bus capacitor to eliminate residual high voltage and avoid electric shock risk. Regular maintenance items include tightening rear aviation connector fixing screws every three months, replenishing high-temperature resistant bearing grease after accumulating over 8000 continuous working hours and cleaning cutting fluid residue and dust on casing surface every half year to retain original natural heat dissipation performance. Random modification to exclusive FU encoder pin definition and internal wiring layout will result in unexpected motor runaway and permanent servo drive locking fault.
8. Typical Application Scope
This turret-specialized AC servo motor is predominantly used for automatic indexing turret drive on precision CNC lathes, widely installed on Tsugami, Mazak, Miyano and other Japanese brand precision turning equipment. It is applicable for mechanical structures requiring frequent station switching, high-precision angular positioning and heavy-load clamping operation, mainly serving automatic numerical control machining workshops and precision component processing production lines.
Get a Quote