Product Overview
The P16V-RSG-30-CC-21-K, P16VMR-10-MC2C-CC-P7-H-25-S121-J, and P16VMR-10-MC2C-BC-P2-V-20-S173-J are high-performance variable displacement swash plate axial piston pumps from the TOKYO KEIKI (formerly TOKIMEC) P16V/P16VMR series, widely deployed in machine tools, injection molding machines, die-casting machines, and other medium-to-high pressure industrial hydraulic systems. The series is renowned for low noise, high efficiency, and flexible variable control options, with a displacement of 16 cm³/rev, speed range of 600 to 1,800 rpm, and volumetric efficiency exceeding 95%.
The three models correspond to distinct control configurations and application scenarios: P16V-RSG-30-CC-21-K features pressure compensator control for automatic pressure cut-off and energy-saving operation in general industrial hydraulic systems; P16VMR-10-MC2C-CC-P7-H-25-S121-J is equipped with solenoid-operated multi-stage pressure control (MC2C) at 25 MPa, enabling electrical switching between two pressure settings or unload states via 200/220 V AC solenoid — ideal for automated equipment requiring PLC integration; P16VMR-10-MC2C-BC-P2-V-20-S173-J also utilizes the MC2C solenoid configuration at 20 MPa with vertical/tank-top mounting (V), suited for compact hydraulic power units.
Every unit is manufactured to TOKYO KEIKI original engineering specifications, achieving 100% drop-in interchangeability — mounting flange, shaft extension, port locations, and control interfaces are dimensionally identical to the OEM unit, requiring no modification to piping, couplings, or mounting plates for direct replacement. Each pump undergoes 100% simulated load testing prior to shipment, including rated pressure loading, flow-pressure characteristic verification, and thermal rise testing, ensuring installation-ready performance.
Technical Specifications
P16V-RSG-30-CC-21-K
Model: P16V-RSG-30-CC-21-K
Series: P16V Series (TOKYO KEIKI / TOKIMEC)
Pump Type: Swash plate axial variable displacement piston pump
Displacement: 16 cm³/rev
Rated Pressure: 21 MPa (210 bar)
Intermittent Peak Pressure: 22.5 MPa (225 bar)
Maximum Speed: 1,800 rpm
Minimum Speed: 600 rpm
Control Type: RSG — Pressure compensator control (pressure cut-off)
Rotation: Clockwise (R, viewed from shaft end)
Mounting: Flange mounting (S)
Port Connection: SAE 4-bolt flange, axial ports (G)
Weight: Approx. 16 kg
Housing Material: High-strength cast iron
Piston/Cylinder Material: Hardened steel
Hydraulic Fluid: Mineral oil, ISO VG32/46 recommended
Fluid Cleanliness: NAS Class 9 or higher (ISO 4406 18/16/13)
Noise Level: Approx. 68.5 dB(A) at 21 MPa, 1,800 rpm
P16VMR-10-MC2C-CC-P7-H-25-S121-J
Model: P16VMR-10-MC2C-CC-P7-H-25-S121-J
Series: P16VMR Series (TOKYO KEIKI / TOKIMEC)
Pump Type: Swash plate axial variable displacement piston pump
Displacement: 16 cm³/rev
Rated Pressure: 25 MPa (250 bar)
Control Type: MC2C — Solenoid-operated multi-stage pressure control
Solenoid Voltage: P7 — 200/220 V AC (50/60 Hz)
Maximum Speed: 1,800 rpm
Minimum Speed: 600 rpm
Mounting: Flange mounting
Interface Configuration: S121 (factory-specific configuration)
Weight: Approx. 16 kg
Housing Material: High-strength cast iron
Hydraulic Fluid: Mineral oil, ISO VG32/46 recommended
Fluid Cleanliness: NAS Class 9 or higher (ISO 4406 18/16/13)
Noise Level: Approx. 68.5 dB(A) at 21 MPa, 1,800 rpm
P16VMR-10-MC2C-BC-P2-V-20-S173-J
Model: P16VMR-10-MC2C-BC-P2-V-20-S173-J
Series: P16VMR Series (TOKYO KEIKI / TOKIMEC)
Pump Type: Swash plate axial variable displacement piston pump
Displacement: 16 cm³/rev
Rated Pressure: 20 MPa (200 bar)
Control Type: MC2C — Solenoid-operated multi-stage pressure control
Solenoid Voltage: P2 — 200 V AC
Maximum Speed: 1,800 rpm
Minimum Speed: 600 rpm
Mounting: V — Vertical / tank-top mounting
Interface Configuration: S173 (factory-specific configuration)
Weight: Approx. 16 kg
Housing Material: High-strength cast iron
Hydraulic Fluid: Mineral oil, ISO VG32/46 recommended
Fluid Cleanliness: NAS Class 9 or higher (ISO 4406 18/16/13)
Key Technical Advantages
1. 100% Drop-in Interchangeability
All three models feature mounting flanges, shaft dimensions, port positions, and control interfaces machined to TOKYO KEIKI original drawings, achieving complete physical and hydraulic interchangeability with the OEM pump. When replacing a failed original unit, no piping modifications, coupling changes, or baseplate alterations are required, minimizing downtime and reducing total maintenance costs.
2. Saddle-Type Swash Plate Structure & Low Noise Operation
The series utilizes a low-vibration, high-rigidity saddle-type swash plate structure combined with optimized valve plate transition zones, achieving a noise level of approximately 68.5 dB(A) at 21 MPa and 1,800 rpm — 5 to 8 dB(A) lower than conventional piston pumps. This makes it particularly suitable for precision machine tools and indoor industrial equipment where noise is a critical concern.
3. Wear-Resistant Bronze Bushing & Contamination Resistance
Pistons and cylinder bores employ wear-resistant bronze bushings with micron-level clearances, delivering highly reliable resistance to contamination and environmental factors. Volumetric efficiency reaches over 95% at rated conditions with overall efficiency around 90%, effectively minimizing internal leakage and energy loss.
4. Flexible Control Configurations
The three models offer control solutions ranging from basic pressure compensation to solenoid-operated multi-stage pressure control. The P16V-RSG-30-CC-21-K utilizes RSG pressure compensator control, which automatically reduces displacement to leakage-only levels when system pressure reaches the set value, achieving energy-saving operation and high-pressure protection. The P16VMR-10-MC2C-CC-P7-H-25-S121-J and P16VMR-10-MC2C-BC-P2-V-20-S173-J feature MC2C solenoid configurations that support switching between two pressure settings or unload states via 200/220 V AC solenoid valves, enabling integration with PLC or automation systems and delivering significant energy savings during idle or low-load conditions.
5. High-Strength Materials & Long Service Life
The housing is cast from high-strength cast iron, with hardened steel pistons and cylinder components providing excellent rigidity and vibration resistance. The bearing system handles continuous radial and axial loads, delivering extended maintenance intervals under rated operating conditions.
Application Areas
Precision Machine Tools: CNC lathes, machining centers, and grinding machines — hydraulic chucks, spindle loosening, tailstock, and fixture clamping systems
Injection Molding & Die-Casting Machines: Mold clamping, injection carriage, ejection, and core-pulling hydraulic circuits
Hydraulic Presses & Shearing Machines: Main cylinder pressure control and fast/slow speed switching circuits
Automated Hydraulic Power Units: Compact HPUs requiring solenoid-controlled multi-stage pressure regulation
General Industrial Hydraulic Systems: Metallurgical equipment, marine deck machinery, and test bench hydraulic power sources
Expert Maintenance Tips
Pre-Installation Check: Before installation, the pump case must be filled with clean ISO VG46 anti-wear hydraulic oil — never dry-start the pump. For the P16VMR-10-MC2C-BC-P2-V-20-S173-J with vertical/tank-top mounting, ensure the air bleed valve is open until oil flows out bubble-free before closing.
Coupling Alignment: The coaxiality deviation (TIR) between pump shaft and motor shaft must be controlled within 0.05 mm. Misalignment leads to premature bearing wear, shaft seal leakage, and abnormal noise. Use flexible couplings but never tire-type couplings.
Fluid Cleanliness Management: System oil cleanliness must achieve NAS Class 9 or higher (ISO 4406 18/16/13). Contamination is the primary cause of premature piston pump failure. Install high-precision return-line filters and inspect the suction filter regularly.
Case Drain Requirements: The case drain line must be routed separately and freely back to the reservoir below oil level, with back pressure not exceeding 0.2 MPa. This circuit carries internal leakage oil and heat away; blockage will cause pump overheating and seal damage.
Solenoid Model Notes: For the P16VMR-10-MC2C-CC-P7-H-25-S121-J and P16VMR-10-MC2C-BC-P2-V-20-S173-J, verify that the solenoid supply voltage matches the P7 (200/220 V AC) or P2 specification. Electrical wiring insulation and shielding should meet industrial environment requirements to prevent electromagnetic interference from causing control malfunction.
Restart After Extended Shutdown: After extended shutdown, perform a “low-speed no-load air purge” procedure — run at low speed for 3 to 5 minutes until air is fully expelled, then gradually apply load.
