Tokimec SQP Vane Pump | SQP3-32 SQP2-21 Hydraulic Pump

Genlu Hydraulic stands as a world-class engineered component manufacturer, fluid power innovator, and strategic global partner specializing in premium high-capacity, low-noise industrial hydraulic vane pumps, twin-flow configurations, and modular drop-in cartridge kit sub-assemblies. The SQP Series Industrial Axially Balanced Single Vane Pump platform (comprising the standard SQP1, SQP2, SQP3, and SQP4 frame foundations) is purpose-built as an ultra-quiet, high-volumetric-efficiency, and 100% drop-in interchangeable alternative to the definitive global industrial benchmark—the Japanese Tokimec / Tokyo Keiki signature SQP product lines. We manage advanced lean manufacturing lines and hold substantial quick-ship component inventories for field variants highly requested by original equipment manufacturers, prominently including SQP3-32-11B-18-S191 and SQP2-21-1C-18-P.

Operating on modern plant floors with high-speed servo injection molding machines, heavy-duty rubber extruders, automated metal press brakes, and central reservoir power units, a main hydraulic pump’s airborne noise emission, fluid pressure ripple, and thermal shearing characteristics directly impact factory compliance and machine positioning precision. Genlu’s SQP series vane pumps conform perfectly to Tokyo Keiki blueprint specifications. We guarantee 100% drop-in mechanical interchangeability across standard SAE 2-bolt mounting flanges, primary splined or cylindrical straight keyed input shaft clearances, SAE standard 4-bolt fluid flange indexing, and the precise intravane geometric flow metering boundaries. Prior to shipment dispatch, every single pump block and cartridge module undergoes 100% Full-Simulation Condition Testing on digitized hydraulic testing stands to certify maximum volumetric output, strict fluid seal isolation, and whisper-quiet operation under maximum continuous pressure.

Technical Specifications 

• Product Line: SQP Series Industrial Low-Noise Axially Balanced Single Vane Pump (Fully cross-compatible with Tokyo Keiki / Tokimec standards)

• Core Covered Specific Configurations:

  • SQP3-32-11B-18-S191 Model Layout (SQP3 large frame, 32 displacement code, SAE 11-tooth splined shaft, outlet indexed 90° counter-clockwise from inlet, design index 18, S191 localized variant modification)

  • SQP2-21-1C-18-P Model Layout (SQP2 medium frame, 21 displacement code, standard 1 straight keyed shaft, outlet indexed 180° opposite from inlet, design index 18)

  • SQP3 Group Displacement Range Coverages: SQP3-21, SQP3-25, SQP3-30, SQP3-32, SQP3-35, SQP3-38

• Displacement Code to Volumetric Capacity Mapping:

  • Code 21 Variant: 67.0 $cc/rev$

  • Code 25 Variant: 79.0 $cc/rev$

  • Code 30 Variant: 95.0 $cc/rev$

  • Code 32 Variant: 102.0 $cc/rev$

  • Code 35 Variant: 111.0 $cc/rev$

  • Code 38 Variant: 121.0 $cc/rev$

• Maximum Continuous Operating Pressure: Rated up to 172 bar (17.2 MPa / 2500 psi) across full performance bands

• Permissible Driving Rotational Velocity Envelope: From 600 rpm (Minimum velocity required for self-priming vane centrifugal seating) up to 1800 rpm (Standard industrial maximum rated speed limits)

• Fluid Connection Port Specifications:

  • Suction Large Inlet: Standard SAE 4-bolt split flange interface (e.g., SQP3 scaled at 2″ or 2-1/2″ dimensions)

  • Discharge Pressure Outlet: Standard SAE high-pressure 4-bolt split flange interface (e.g., SQP3 scaled at 1″ or 1-1/4″ dimensions)

• Drive Input Shaft Profiles: Code 1 – Standard Cylindrical Straight Keyed Shaft; Code 11 – SAE Standard Involute Splined Shaft

• Discharge Port Clocking Alignment Designations: A (Outlet aligned inline with inlet at 0°); B (Outlet turned 90° counter-clockwise from inlet); C (Outlet positioned 180° opposite from inlet); D (Outlet turned 270° clockwise from inlet)

Key Technical Advantages:

• Patented Intravane Double-Blade Architecture for Near-Silent Operation: The core rotor slots of the SQP platform are fitted with a specialized intravane mechanism (a secondary micro-vane nested within the primary blade). As the blade transitions from the low-pressure suction zone to the high-pressure discharge sector, hydraulic oil directed to the internal intravane cavity automatically balances the blade tip’s contact force against the inner cam ring. This minimizes localized friction wear and fluid ripple, keeping total running noise between 53 and 58 dB for premium, whisper-quiet factory automation.

• Hydraulically Balanced Internal Fluid Chambers for Zero Shaft Deflection: The internal cam ring features a dual-symmetric, elliptical profile with matching pairs of suction and pressure fields. As the rotor turns, fluid intake and discharge actions occur simultaneously on opposite sides of the transmission shaft, neutralizing the internal radial hydraulic forces. This zero net radial load layout eliminates shaft deflection, protecting the primary heavy bearings and front shaft seals from premature fatigue wear.

• Modular, Drop-In Cartridge Kit Assemblies for Rapid Field Rebuilds: The cam ring, rotor, dual-blade vanes, and bi-metal side plates are pinned together into a single, pre-calibrated cartridge module. If fluid contamination compromises flow efficiency, technicians can swap out the entire internal cartridge kit in under 15 minutes by removing the rear housing cover bolts, without unplumbing the pump housing or rigid steel lines, minimizing production downtime.

• High-Density Ductile Iron Housing for Vibration Damping and Shock Resistance: Unlike standard mobile gear or vane pumps with lightweight bodies, Genlu’s SQP housings are cast from heavy-duty, high-density ductile iron that undergoes extensive thermal aging treatment. This rigid casing dampens high-frequency mechanical vibration and withstands sudden pressure surges or hydraulic shocks from fast-cycling servo loops, preventing housing micro-cracks.

Application Areas:

• High-Precision Servo Hydraulic Injection Molding Machines: High-capacity main servo-pump arrangements, mold-clamping actuators, and rubber compound extrusion circuits.

• Precision CNC Machine Tools & Metal Forming Centers: High-stability central power units for surface grinding stations, automated CNC turning centers, and high-speed hydraulic press brakes.

• Heavy Metallurgy Installations & Closed Automated Assembly Lines: Centralized lubrication and fluid power platforms for rolling mills and heavy automotive component conveyor lines.

Expert Maintenance Tips:

• Meticulously Verify Outlet Clocking Alignment Codes (A/B/C/D) to Prevent Pipe Interference: When executing a replacement for an existing pump (such as a SQP3-32-11B-18-S191 build), the code letter B defines an outlet position indexed 90° from the suction inlet. Selecting an alternate code like A or C will misalign the discharge port, preventing it from mating to pre-plumbed rigid piping. Always check the spatial orientation of the ports relative to the shaft end before confirming your order.

• Enforce Initial Electric Motor Low-Speed Threshold Constraints (Never Operate Below 600 RPM): These dual-blade intravane cartridges depend entirely on the centrifugal forces generated above 600 rpm to fling the blades out of the rotor slots to seal against the cam ring. If implementing energy-saving servo parameters, ensure the minimum motor velocity threshold is never set below 600 rpm. Running below this threshold causes the pump to turn without building pressure, leading to localized friction heat that can destroy the cartridge kit within 30 seconds.

• Maintain Total Suction Flange Sealing Integrity to Guard Against Noise Spikes: SQP pumps are highly regarded for their quiet operation. A sudden rise in noise or a sharp metallic crackling sound usually indicates air induction through an aged suction flange O-ring. These micro-bubbles implode violently in the high-pressure discharge zone, causing rapid cavitation erosion across the cam ring. Keep all suction lines sealed and maintain an oil cleanliness standard of ISO 4406 19/16 or NAS 8.