Product Overview
The SQP Series, manufactured by Tokimec (Tokyo Keiki) / Parker, is a high-pressure, high-performance intra-vane pump family specifically developed for low-noise industrial applications. Available in single, double, and triple configurations across 4 frame sizes, 16 series, and 31 displacement options, the SQP Series offers exceptional flexibility for complex hydraulic circuit designs.
The SQP321 is a triple vane pump that integrates three independent pumping sections (SQP3 + SQP2 + SQP1) into a single housing driven by one shaft, providing three independent oil flows for simultaneous control of multiple hydraulic functions. The SQP21 is a double vane pump (SQP2 + SQP1) offering a compact solution for medium to low flow requirements.
Our products are manufactured to be 100% interchangeable with Tokimec (Tokyo Keiki) and Vickers original specifications—a true “drop-in” replacement solution. Every unit undergoes 100% full-load and flow-matching testing under simulated operating conditions before shipment, ensuring volumetric efficiency, flow matching, and noise performance meet or exceed original specifications at rated pressure.
Technical Specifications
SQP321-35-19-11-86CCC-18
Product Type: Triple Fixed Displacement Vane Pump
Brand Compatibility: Tokimec (Tokyo Keiki) / Parker
Series: SQP321 (SQP3 + SQP2 + SQP1 triple combination)
Section 1 Displacement (Front, SQP3): 35 ml/r
Section 2 Displacement (Middle, SQP2): 19 ml/r
Section 3 Displacement (Rear, SQP1): 11 ml/r
Rated Operating Pressure: 175 bar
Maximum Intermittent Pressure: 210 bar
Rated Speed Range: 600 – 1800 r/min
Maximum Speed: 1800 r/min
Control Configuration: 86CCC (SAE C 2-Bolt Flange + Keyed Shaft + Standard Porting)
Suffix Code: -18 (Petroleum-based hydraulic fluid)
Mounting: SAE C 2-Bolt / 6-Bolt Flange
Shaft Type: Keyed Straight Shaft (86# shaft, Ø22.225–24.465 mm)
Rotation: Clockwise (standard)
Port Connection: SAE Standard Ports
Fluid Compatibility: Petroleum-based hydraulic fluid (unmarked); optional Phosphate Ester (F3) or Water-Glycol (F11)
Recommended Viscosity: 17 – 37 mm²/s
Maximum Oil Temperature: 55°C
SQP321-32-17-8VQ-86CCC
Product Type: Triple Fixed Displacement Vane Pump
Brand Compatibility: Tokimec (Tokyo Keiki) / Parker
Series: SQP321 (SQP3 + SQP2 + SQP1 triple combination)
Section 1 Displacement (Front, SQP3): 32 ml/r
Section 2 Displacement (Middle, SQP2): 17 ml/r
Section 3 Displacement (Rear, SQP1): 8 ml/r
Rated Operating Pressure: 175 bar
Maximum Intermittent Pressure: 210 bar
Rated Speed Range: 600 – 1800 r/min
Maximum Speed: 1800 r/min
Control Configuration: VQ (Special control porting) + 86CCC (SAE C 2-Bolt Flange)
Suffix Code: -18 (Petroleum-based hydraulic fluid)
Mounting: SAE C 2-Bolt / 6-Bolt Flange
Shaft Type: Keyed Straight Shaft
Rotation: Clockwise (standard)
Port Connection: SAE Standard Ports
Fluid Compatibility: Petroleum-based hydraulic fluid (unmarked)
Recommended Viscosity: 17 – 37 mm²/s
Maximum Oil Temperature: 55°C
SQP21-14-5-1DC-18
Product Type: Double Fixed Displacement Vane Pump
Brand Compatibility: Tokimec (Tokyo Keiki) / Parker
Series: SQP21 (SQP2 + SQP1 double combination)
Section 1 Displacement (Front, SQP2): 14 ml/r
Section 2 Displacement (Rear, SQP1): 5 ml/r
Rated Operating Pressure: 175 bar
Maximum Intermittent Pressure: 210 bar
Rated Speed Range: 600 – 1800 r/min
Maximum Speed: 1800 r/min
Control Configuration: 1DC (1 = Straight Shaft + DC = Specific Port Configuration)
Suffix Code: -18 (Petroleum-based hydraulic fluid)
Mounting: SAE Standard Flange
Shaft Type: Straight Keyed Shaft
Number of Vanes: 12
Rotation: Clockwise (standard)
Port Connection: SAE Standard Ports
Fluid Compatibility: Petroleum-based hydraulic fluid (unmarked)
Recommended Viscosity: 17 – 37 mm²/s
Maximum Oil Temperature: 55°C
Key Technical Advantages
1. Intra-Vane (Sub-Vane) Design for Extended Service Life
The advanced intra-vane (sub-vane / inner vane) design effectively reduces high-pressure impact of the vanes against the stator cam ring. Under high-pressure and high-speed conditions, vane movement remains exceptionally stable, significantly minimizing wear on both stator and vanes, resulting in substantially extended pump life.
2. Industry-Leading Low-Noise Performance
The SQP Series is globally renowned as “Super-Quiet”—the preferred choice for indoor industrial environments. Through thickened housing construction, scientifically engineered pulsation attenuation structures, and high-order mathematical curve transition profiles on the stator, pressure pulsation and fluid-borne noise are dramatically reduced. The resulting acoustic signature is smooth and refined, making it ideal for precision manufacturing facilities with strict noise limitations.
3. High Volumetric Efficiency & Energy Savings
Delivers over 90% volumetric efficiency at 210 bar (3000 psi) operating pressure. Precision-ground internal components minimize internal leakage, reduce heat generation, and maximize overall energy conversion efficiency. High mechanical efficiency (typically 94%) further reduces operating costs.
4. Modular Cartridge Design for Rapid Maintenance
The cartridge-type construction allows individual pump cartridge kits to be replaced quickly and independently. Each section (SQP3 / SQP2 / SQP1) features its own cartridge kit. On-site repairs or displacement changes can be completed in minutes without removing the entire pump assembly from the system—dramatically reducing downtime and maintenance costs.
5. 100% Drop-In Interchangeability – Zero Retrofit Cost
Manufactured to exact Tokimec (Tokyo Keiki) and Vickers original specifications—mounting dimensions, port locations, and shaft configurations are identical to the original. No piping modifications or installation adapters are required for direct replacement.
6. 100% Full-Load Tested for Proven Reliability
Every pump undergoes rigorous full-pressure and flow-matching testing across all sections before shipment. Critical components are manufactured from premium materials with advanced heat treatment processes, ensuring stability and reliability under rated operating conditions.
Application Areas
Injection Molding Machines: Synchronizing high-speed clamping, injection, and ejection functions
Die-Casting Machinery: Delivering stable, pulse-free high-pressure hydraulic power
CNC Machine Tools & Machining Centers: Providing smooth hydraulic power for precision numerical control systems
Rubber Processing Machinery: Low-noise operation improves factory working environment
Automated Assembly Lines: Single pump driving multiple actuators, simplifying hydraulic circuit design
Bending & Forming Presses: Staged flow control for energy-efficient cycle operation
Industrial Power Units: Core power source for indoor hydraulic stations requiring quiet operation
Expert Maintenance Tips
1. Installation Precautions
Before installation, verify that the pump’s rotation direction matches system requirements. SQP Series vane pumps have a strictly defined rotation direction (standard: clockwise)—reverse operation is not permitted, as the rotor vane slots are angled, vanes are chamfered, and the port plate metering slots and suction/discharge ports are designed for a specific rotation direction.
Suction piping should be as short as possible, minimizing unnecessary restrictions such as elbows, to ensure the pump does not exceed its permissible Net Positive Suction Head (NPSH) rating during operation.
Suction and discharge lines must have independent supports; the pump housing must not bear piping loads.
2. Pre-Startup Checklist
Before startup, verify shaft rotation direction, connection safety and correctness, fluid type, cleanliness, and fluid level.
Ensure the hydraulic circuit is fully primed to prevent dry running.
3. Fluid Management
Petroleum-based hydraulic fluid is recommended, with viscosity maintained between 17 – 37 mm²/s.
Oil temperature should not exceed 55°C. Excessive viscosity may cause suction difficulties; insufficient viscosity will increase internal leakage.
Maintain proper fluid filtration and ensure working surfaces remain clean.
4. Maintenance & Overhaul
Vane-to-slot clearance must be properly balanced—excessive clearance increases internal leakage, while insufficient clearance prevents free vane extension, leading to operational failure.
Axial clearance significantly affects volumetric efficiency: recommended clearance is 0.015 – 0.03 mm for small-frame pumps and 0.02 – 0.045 mm for medium-frame pumps.
The port plate and stator must be correctly aligned with locating pins; vanes, rotor, and port plate must not be installed backwards.
The suction area on the stator inner surface is most prone to wear. When necessary, the stator can be flipped to convert the worn suction area into the discharge area, extending service life.
