T7DD/T7DDS series Denison Double Vane Pump
Single pump：T6C、T6D、T6E、T6CM、T6CP、T7B、T7BS、T7D、T7DS、T7E、T7ES
Double pump：T6CC、T6DC、T6EC、T6ED、T6EE、T7BB、T7BBS、T7DB、T7DBS、T7EB、T7EBS、T67CB、T67DB、T67EB、T67DBS
Triple pump：T6DCC、T6EDC、T6ECC、T6EDCC、T7DBB、T7DBSB、T7EBB、T7EBSB、T67EDB、T67EDBS、T67DCB、T67DDBS
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1. Series Overview
2. General Core Specifications & Parameters
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Parameter Item
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Technical Specification
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Remarks
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Pump Structure
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Fixed-displacement double vane pump (dual independent pump chambers, dual independent output circuits)
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Supplies oil for dual independent circuits with high energy efficiency
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Rated Working Pressure
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210bar
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Continuous stable working pressure
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Maximum Peak Pressure
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320bar
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Instantaneous impact pressure, short-term tolerance
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Speed Range
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600~3600rpm
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Standard industrial range; servo adaptation range: 1000~3000rpm
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Single Pump Displacement Range
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5.8~137.5cm³/rev
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Multiple displacement combinations of E-series and B-series
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Total Displacement Range
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11.6~268.7cm³/rev
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Flexible combination of large and small displacements for double pumps
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Volumetric Efficiency
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≥92% (1800rpm standard working condition)
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Mechanical efficiency ≥94%
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Applicable Medium
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Mineral hydraulic oil, anti-wear hydraulic oil
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Standard NBR seal, fluorine rubber seal customizable
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Working Oil Temperature
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-20℃~80℃
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Conventional industrial operating temperature range
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Pump Body Material
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High-strength cast iron pump body, alloy wear-resistant blades/rotors
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Excellent wear and impact resistance, long service life
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Overall Weight
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36~42kg
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Slightly varies with displacement specifications
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3. Model Coding Rules (Core Definition)
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Series Suffix: DD = Standard basic type; DDS = Servo optimized type
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Displacement Code: E+ number, represents nominal single pump displacement (cm³/rev)
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Rotation Direction: 1R = Standard right rotation, 5R = Reinforced right rotation, 1L = Left rotation
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Seal Code: A1M0 = NBR standard seal, suitable for conventional hydraulic oil
4. Detailed Parameters of 20 Core Models
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No.
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Full Model
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Front Pump Displacement (cm³/rev)
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Rear Pump Displacement (cm³/rev)
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Total Displacement (cm³/rev)
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Rated Pressure (bar)
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Peak Pressure (bar)
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Applicable Speed (rpm)
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Structural Features
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1
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T7DDS-E22-E15-1R01-A1M0
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22
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15
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37
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210
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320
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600~3600
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Servo optimized type, small flow combination, suitable for precision machine tools
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2
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T7DDS-E38-E38-1R01-A1M0
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38
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38
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76
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210
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320
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600~3600
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Equal dual pump, dedicated for servo injection molding machines
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3
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T7DDS-E38-E38-5R03-A1M0
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38
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38
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76
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210
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320
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600~3600
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Reinforced right rotation shaft, suitable for heavy-duty conditions
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4
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T7DDS-E42-E42-1R01-A1M0
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42
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42
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84
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210
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320
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600~3600
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Large flow equal combination, adapted for forging equipment
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5
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T7DDS-E38-E31-1R01-A1M0
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38
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31
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69
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210
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320
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600~3600
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Mixed large and small flow, supports multi-circuit oil supply
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6
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T7DDS-E42-E28-1R00-A1M0
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42
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28
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70
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210
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320
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600~3600
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Standard flange mounting, universal for industrial applications
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7
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T7DD-E25-E18-1R01-A1M0
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25
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18
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43
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210
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320
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600~3600
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Standard basic type, suitable for small and medium-sized machine tools
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8
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T7DD-E30-E22-1R01-A1M0
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30
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22
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52
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210
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320
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600~3600
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Excellent stability for conventional high-pressure working conditions
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9
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T7DD-E35-E35-1R01-A1M0
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35
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35
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70
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210
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320
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600~3600
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Equal dual pump, standard for general hydraulic stations
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10
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T7DD-E40-E32-1R01-A1M0
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40
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32
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72
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210
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320
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600~3600
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Matched high and low flow for energy-saving oil supply
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11
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T7DDS-E28-E22-1L01-A1M0
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28
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22
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50
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210
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320
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600~3600
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Left rotation configuration, suitable for special equipment
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12
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T7DDS-E45-E38-1R01-A1M0
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45
|
38
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83
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210
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320
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600~3600
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Large flow combination, dedicated for die-casting machines
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13
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T7DD-E22-E15-1R01-A1M0
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22
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15
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37
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210
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320
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600~3600
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Small flow basic model, suitable for small hydraulic equipment
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14
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T7DD-E42-E42-1R01-A1M0
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42
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42
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84
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210
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320
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600~3600
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Large flow basic model, adapted for heavy machinery
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15
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T7DDS-E32-E25-1R03-A1M0
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32
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25
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57
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210
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320
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600~3600
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Reinforced shaft, suitable for heavy-duty continuous operation
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|
16
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T7DD-E38-E31-1R01-A1M0
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38
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31
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69
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210
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320
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600~3600
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Cost-effective universal model for multi-circuit systems
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|
17
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T7DDS-E50-E42-1R01-A1M0
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50
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42
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92
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210
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320
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600~3600
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Ultra-large flow combination, for large forging equipment
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18
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T7DD-E28-E28-1R01-A1M0
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28
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28
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56
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210
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320
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600~3600
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Medium flow equal pump, standard for machine tool hydraulic systems
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19
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T7DDS-E35-E28-1L01-A1M0
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35
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28
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63
|
210
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320
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600~3600
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Left rotation servo model, for special installation conditions
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20
|
T7DD-E45-E35-1R01-A1M0
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45
|
35
|
80
|
210
|
320
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600~3600
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Heavy-duty large flow, dedicated for metallurgical equipment
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5. Model Selection Instructions
Complete products, original authentic products, fast delivery!Welcome to consult.
Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
