SQP2-21-1C-18-P Tokimec Single Vane Pump 65 ml/r 175 bar

Product Overview

The SQP Series, manufactured by Tokimec (Tokyo Keiki), is a family of high-pressure, high-performance intra-vane pumps specifically developed for low-noise industrial applications. Widely used in injection molding machines, die-casting machines, machine tools, and various hydraulic systems requiring quiet operation. The series encompasses four sub-series—SQP1, SQP2, SQP3, and SQP4—with displacement ranges covering 7.5 to 237 ml/r, meeting diverse requirements from small equipment to large hydraulic systems.

The SQP Series features a double-acting intra-vane (sub-vane) structure—the rotor performs suction and discharge twice per revolution, resulting in low flow pulsation and smooth pressure. The stator internal curve is precision-ground with a dual-arc plus transition curve design for even wear and extended service life. The intra-vane structure (main vane + sub-vane) directs high pressure to the vane bottom, keeping vanes tightly against the stator with minimal internal leakage and stable high-pressure performance. The symmetrically arranged port plates balance axial forces, reducing wear and maximizing efficiency. The housing is manufactured from cast iron/aluminum alloy for high rigidity, vibration resistance, and excellent heat dissipation.

SQP2-21-1C-18-P belongs to the SQP2 series medium-displacement pump with 65 ml/r displacement, suitable for moderate-flow hydraulic systems. SQP1-2-1BF-15 and SQP1-2-1CF-15 belong to the SQP1 series small-displacement pumps with 7.5 ml/r displacement, ideal for small equipment and auxiliary hydraulic circuits.

Our products are manufactured to be 100% interchangeable with Tokimec (Tokyo Keiki) 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 rate, and noise performance meet or exceed original specifications at rated pressure.

Technical Specifications

SQP2-21-1C-18-P

• Product Type: Fixed Displacement Single Vane Pump

• Brand: Tokimec (Tokyo Keiki)

• Series: SQP2 (Medium Housing)

• Displacement Code: 21

• Geometric Displacement: 65 ml/r

• Rated Continuous Pressure: 17.5 MPa (175 bar)

• Maximum Speed: 1800 r/min

• Minimum Speed: 600 r/min

• Flow Rate (@1000 r/min): Approx. 65 L/min

• Shaft Type: 1 = Keyed Parallel Shaft

• Port Position: C = Same line as inlet port

• Mounting Type: Flange Mount (unmarked)

• Rotation: P or R = Clockwise (viewed from shaft end)

• Design Number: 18

• Fluid Compatibility: Petroleum-based oil (unmarked); F3: Phosphate ester; F11: Water-glycol

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

SQP1-2-1BF-15

• Product Type: Fixed Displacement Single Vane Pump

• Brand: Tokimec (Tokyo Keiki)

• Series: SQP1 (Small Housing)

• Displacement Code: 2

• Geometric Displacement: 7.5 ml/r

• Rated Continuous Pressure: 14 MPa (140 bar)

• Maximum Speed: 1800 r/min

• Minimum Speed: 600 r/min

• Flow Rate (@1000 r/min): 7.5 L/min

• Shaft Type: 1 = Keyed Parallel Shaft

• Port Position: B = 90° counter-clockwise from inlet

• Mounting Type: F = Foot Mount

• Rotation: Clockwise (unmarked)

• Design Number: 15

• Fluid Compatibility: Petroleum-based oil

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

SQP1-2-1CF-15

• Product Type: Fixed Displacement Single Vane Pump

• Brand: Tokimec (Tokyo Keiki)

• Series: SQP1 (Small Housing)

• Displacement Code: 2

• Geometric Displacement: 7.5 ml/r

• Rated Continuous Pressure: 14 MPa (140 bar)

• Maximum Speed: 1800 r/min

• Minimum Speed: 600 r/min

• Flow Rate (@1000 r/min): 7.5 L/min

• Shaft Type: 1 = Keyed Parallel Shaft

• Port Position: C = Same line as inlet port

• Mounting Type: F = Foot Mount

• Rotation: Clockwise (unmarked)

• Design Number: 15

• Fluid Compatibility: Petroleum-based oil

• Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil

Key Technical Advantages

1. Intra-Vane (Sub-Vane) Structure – High-Pressure Stability, Minimal Leakage
The SQP Series features an advanced intra-vane (main vane + sub-vane) structure design where high pressure is directed to the vane bottom, keeping vanes tightly against the stator inner wall. This ensures optimal vane-to-stator contact and minimizes internal leakage, maintaining exceptionally high volumetric efficiency (≥94%) even under high-pressure conditions.

2. Industry-Leading Low-Noise Performance
The SQP Series is renowned as the benchmark for low-noise vane pumps. The intra-vane structure combined with pulsation attenuation slot design reduces operating noise by 5–8 dB compared to conventional vane pumps. The double-acting structure significantly reduces flow pulsation and noise compared to single-acting pumps. The thickened housing design further enhances pump strength and vibration resistance. The SQP Series is exceptionally suitable for indoor industrial environments with strict noise limitations.

3. Double-Acting Balanced Design – Extended Bearing Life
The SQP Series employs a double-acting balanced design—the rotor performs suction and discharge twice per revolution, resulting in low flow pulsation and smooth pressure. The symmetrically arranged dual port plates fully balance axial forces, dramatically reducing bearing stress and significantly extending bearing life. The precision-ground stator internal curve with dual-arc plus transition curve design ensures even wear and long service life.

4. Cartridge Design for Rapid Maintenance
The SQP Series features cartridge-type construction, allowing individual pump cartridges to be replaced quickly and independently. On-site repairs or displacement changes can be completed in minutes without removing the entire pump from the system—dramatically reducing downtime and maintenance costs.

5. Broad Fluid Compatibility – Flexible Adaptation
The SQP Series accommodates multiple hydraulic media—petroleum-based oil (unmarked), phosphate ester (F3 prefix), and water-glycol (F11 prefix). Users can flexibly select the fluid type based on actual operating conditions without pump replacement.

6. 100% Drop-In Interchangeability – Zero Retrofit Cost
Manufactured to exact Tokimec (Tokyo Keiki) 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.

Application Areas

• Injection Molding Machines: SQP2-21 suitable for medium-sized injection molding machine hydraulic power systems

• Die-Casting Machinery: Providing stable, low-noise high-pressure hydraulic power

• CNC Machine Tools & Machining Centers: SQP1-2 providing small-flow, smooth hydraulic power for precision numerical control systems

• Small Equipment & Auxiliary Circuits: SQP1-2 ideal for clamping, positioning, and other auxiliary hydraulic functions

• Rubber & Plastics Machinery: Low-noise operation improves factory working environment

• Industrial Power Units: Core power source for indoor hydraulic stations requiring quiet operation

Expert Maintenance Tips

1. Model Identification and Selection

• SQP1 Series: Displacement range 7.5–45 ml/r, lightweight and compact, general-purpose

• SQP2 Series: Displacement range 32.5–65 ml/r, medium-pressure medium-flow, commonly used in machine tools and injection molding

• In model code “SQP2-21-1C-18-P”: SQP2 = Series, 21 = Displacement code (65 ml/r), 1 = Keyed parallel shaft, C = Port position (same line as inlet), 18 = Design number, P = Clockwise rotation

• In model code “SQP1-2-1BF-15”: SQP1 = Series, 2 = Displacement code (7.5 ml/r), 1 = Keyed parallel shaft, B = Port position (90° CCW from inlet), F = Foot mount, 15 = Design number

• Suffix “-18” indicates Design Number 18 (SQP2/SQP3/SQP4); suffix “-15” indicates Design Number 15 (SQP1 series only)

2. Installation Precautions

• Verify pump rotation direction matches system requirements—unmarked or P/R denotes clockwise, LH denotes counter-clockwise (viewed from shaft end).

• SQP1 Series uses Design Number 15; SQP2/SQP3/SQP4 use Design Number 18.

• Confirm mounting type matches—unmarked denotes flange mount; “F” denotes foot mount.

• Suction piping should be as short as possible, minimizing unnecessary restrictions.

• The pump housing must not bear piping loads; suction and discharge lines must have independent supports.

3. Pre-Startup Checklist

• Verify oil level in the reservoir is adequate and fluid type is correct (ISO VG32, VG46, or VG68 anti-wear hydraulic oil recommended).

• Confirm all piping connections are secure with no leakage.

• Prime the pump by filling the housing with oil before first startup to prevent dry running.

4. Fluid Management

• High-quality anti-wear hydraulic oil is recommended; maintain fluid cleanliness at NAS 9 or higher—contamination is the leading cause of premature vane pump failure.

• SQP Series is compatible with petroleum-based oil, phosphate ester (F3 prefix), and water-glycol (F11 prefix).

• Regularly check oil temperature to ensure it does not exceed 60°C.

5. Scheduled Maintenance

• Replace hydraulic oil and filters every 2000 operating hours or annually.

• SQP Series features cartridge-type construction—cartridges can be replaced independently.

• Cartridge replacement can be completed in minutes without removing the entire pump.

• If flow drops or pressure becomes unstable, first inspect cartridge wear—replacing the cartridge kit restores performance.

F11-SQP3-32-1C-18 F11-SQP3-35-1D-18
F11-SQP3-38-1A-18 F11-SQP4-42-86D-18
F11-SQP4-50-86B-18 F11-SQP4-57-86D-18
F11-SQP4-60-86C-18 F11-SQP4-66-86C-18
F11-SQP4-75-86A-18 F11-SQP21-14-7-1CC-18

SQP21-17-11-1BB-18
SQP21-21-14-1DD-18
SQP21-21-8-1CC-18
SQP31-21-11-1CC-18
SQP31-25-11-1CC-18
SQP31-30-14-1DD-18
SQP31-35-8-1DD-18
SQP31-38-14-1CD-18
SQP32-25-14-86AA-18
SQP32-30-17-86AA-18
SQP32-35-21-86CC-18
SQP32-38-17-86AD-18
SQP41-42-7-86AA-18
SQP41-50-11-86AA-18
SQP41-60-14-86BA-18
F11-SQP42-60-14-86DD-18
F11-SQP42-50-17-86DD-18
F11-SQP42-45-21-86AB-18
F11-SQP42-66-21-86CC-18
F11-SQP43-60-35-86AB-18
F11-SQP43-50-32-86CC-18
F11-SQP43-45-30-86DD-18
SQP43-42-21-86AA-18
SQP321-35-17-7-1BBB-18
SQP321-30-14-11-1CCC-18
SQP211-17-8-6-1CCC-18
SQP432-60-35-17-86AAA-18
SQP432-50-30-14-86BCC-18
SQP432-45-25-11-86CDD-18
SQP1-2-86C-18
SQP1-3-86C-18
SQP1-4-86C-18
SQP1-5-86C-18
SQP1-6-86C-18
SQP1-7-86C-18
SQP1-8-86C-18
SQP1-11-86C-18
SQP1-2-1AF-LH-15
SQP1-2-1BF-LH-15
SQP1-2-1CF-LH-15
SQP1-2-1DF-LH-15
SQP1-2-1A-LH-15
SQP1-2-1B-LH-15
SQP1-2-1C-LH-15
SQP1-2-1D-LH-15
SQP1-2-1AF -15
SQP1-2-1BF -15
SQP1-2-1CF -15