SQP Double Vane Pump Specifications and Model Details
Core Conclusion: The SQP series double vane pumps are low-noise fixed-displacement double vane pumps manufactured by TOKYO KEIKI (formerly Tokimec). The product lineup includes six basic series: SQP21, SQP31, SQP32, SQP41, SQP42, SQP43. Models with the suffix S (SQPS) are special versions. The displacement range is 7.5～237 mL/r, the maximum working pressure is 17.2MPa, and the maximum rotating speed is 1800r/min.
1. Basic Model Series
|
Series
|
Applicable Displacement Range
|
Structural Features
|
|
SQP21/SQPS21
|
Shaft side: 10,12,14,15,17,19,21 Cover side: 2,3,4,5,6,7,8,9,11,12,14
|
Small-sized double pump, suitable for low-flow systems
|
|
SQP31/SQPS31
|
Shaft side: 17,21,25,30,32,35,38 Cover side: 2,3,4,5,6,7,8,9,11,12,14
|
Medium-sized double pump with wide application scenarios
|
|
SQP32/SQPS32
|
Shaft side: 17,21,25,30,32,35,38 Cover side: 10,12,14,15,17,19,21
|
Medium-sized double pump with larger cover-side displacement
|
|
SQP41/SQPS41
|
Shaft side: 30,35,38,42,50,60 Cover side: 2,3,4,5,6,7,8,9,11,12,14
|
Large-sized double pump with large shaft-side displacement
|
|
SQP42/SQPS42
|
Shaft side: 30,35,38,42,50,60 Cover side: 10,12,14,15,17,19,21
|
Large-sized double pump with medium cover-side displacement
|
|
SQP43/SQPS43
|
Shaft side: 30,35,38,42,50,60 Cover side: 17,21,25,30,32,35,38
|
Large-sized double pump with large cover-side displacement
|
2. Complete Model Coding Rules
Complete model example: F11-SQP32-35-17-86CD2-18-T
|
Position
|
Code
|
Meaning
|
|
1
|
F11/F3 / Omitted
|
Hydraulic fluid type: F11 = Water-glycol F3 = Phosphate ester Omitted = Mineral oil
|
|
2
|
SQP/SQPS
|
Low-noise fixed-displacement double vane pump: SQPS = Special version
|
|
3
|
32
|
Series code: 1st digit = Frame size (2/3/4) 2nd digit = Cover side displacement type (1/2/3)
|
|
4
|
35
|
Shaft side (1st stage) displacement code
|
|
5
|
17
|
Cover side (2nd stage) displacement code
|
|
6
|
86
|
Shaft end type: 86 = Parallel square key
|
|
7
|
CD
|
Oil port position (viewed from cover end): C = Suction port position D = Discharge port position
|
|
8
|
2
|
Mounting flange type: 2 = SAE 2-hole flange
|
|
9
|
LH / Omitted
|
Rotation direction: LH = Left-hand rotation, Omitted = Right-hand rotation
|
|
10
|
18
|
Design number
|
|
11
|
T / Omitted
|
Special specification mark
|
3. Key Specification Parameters
|
Parameter
|
Value
|
Remarks
|
|
Maximum Working Pressure
|
17.2MPa
|
Continuous working pressure: 14.7MPa
|
|
Maximum Rotating Speed
|
1800r/min
|
May be reduced to 1200r/min under special working conditions
|
|
Minimum Rotating Speed
|
600r/min
|
Minimum speed for stable operation
|
|
Displacement Range
|
7.5～237 mL/r
|
Covered by different series combinations
|
|
Noise Characteristic
|
Low noise design
|
Adopts intra-vane and pulsation attenuation structure
|
|
Applicable Medium
|
Mineral oil, water-glycol, phosphate ester
|
Select corresponding model prefix accordingly
|
|
Mounting Method
|
Flange mounting
|
Standard SAE flange
|
4. Common Model Examples
-
SQP21-21-11: Small-sized double pump with shaft-side displacement of 21mL/r and cover-side displacement of 11mL/r
-
SQP32-35-17: Medium-sized double pump with shaft-side displacement of 35mL/r and cover-side displacement of 17mL/r
-
SQP42-50-21: Large-sized double pump with shaft-side displacement of 50mL/r and cover-side displacement of 21mL/r
-
F3-SQPS31-25-14: Special version, applicable to phosphate ester hydraulic oil, with shaft-side displacement of 25mL/r and cover-side displacement of 14mL/r
5. Model Selection Guidelines
-
Select a suitable displacement combination according to system flow requirements
-
Ensure the working pressure does not exceed 17.2MPa
-
Select the model prefix matching the type of hydraulic fluid
-
Confirm the shaft end type, oil port position and mounting flange type
-
Pay attention to rotation direction requirements (LH shall be specified separately for left-hand rotation)
All specific parameters shall be subject to the official technical manual of TOKYO KEIKI.
