T7DS series Parker Denison 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 & Structural Features
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Item
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Technical Description
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Pump Structure
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Single pump, fixed displacement, single-stage vane structure
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Standard Mounting
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SAE C 2-bolt J744 standard flange (5-inch spigot)
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Core Advantages
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Low noise operation, high volumetric efficiency, strong low-speed performance, servo system adaptation
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Typical Application
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Servo hydraulic systems, variable speed drive equipment, precision industrial machinery
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2. Core Technical Parameters
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Parameter Item
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Standard Value Range
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Remarks
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Theoretical Displacement Range
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44.0–158.0 cm³/rev (2.68–9.64 in³/rev)
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Complete displacement coverage via multiple pump core codes
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Max Continuous Working Pressure
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210–250 bar (3045–3625 psi)
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Long-term stable rated working pressure
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Max Intermittent Pressure
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240–280 bar (3480–4060 psi)
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Short-term peak pressure tolerance
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Rated Speed Range
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600–3000 rpm
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Low-speed stable operation available for VSD systems
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Standard Shaft Type
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1-1/4″ parallel key shaft; optional spline shaft
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Compatible with standard industrial motor connection
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Standard Seal Configuration
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S1 BUNA N rubber seal
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Suitable for standard mineral hydraulic oil
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Max Inlet Pressure
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0.7 bar
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Standard inhalation condition requirement
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Applicable Hydraulic Media
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Mineral oil, biodegradable hydraulic oil, water-based hydraulic fluid
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Special seals required for non-standard media
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3. T7DS Series Displacement Code & Corresponding Parameters
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Displacement Code
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Theoretical Displacement (ml/rev)
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Displacement Code
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Theoretical Displacement (ml/rev)
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B17
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55.0
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B31
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100.0
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B20
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63.5
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B38
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122.0
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B22
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70.3
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B42
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137.5
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B27
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86.1
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B50
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158.0
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4. Complete Model Naming Convention (Take T7DS-E28-1R02-A5MW as Standard Example)
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Code Segment
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Detailed Meaning
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Optional Specifications
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T7DS
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Series identifier: SAE C flange single fixed-displacement vane pump
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Fixed as T7DS
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E28 / BXX
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Pump core displacement code, determines pump flow output
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B17/B20/B22/B27/B31/B38/B42/B50, etc.
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1R02
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Shaft type + rotation direction + configuration code
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1=standard shaft; R=clockwise; L=counterclockwise; 00/02=standard configuration
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A5
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Seal grade code
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A1/A5: different temperature and medium resistant seals
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MW
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Thread type and mounting accessory code
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M0=metric thread; W=optimized port configuration
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5. Typical Standard Models
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T7DS-E28-1R02-A5MW: Standard SAE C flange single pump, universal for servo and variable speed systems
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T7DS-B22-1R00-A1M0: 70.3ml/rev medium displacement standard model, widely used in general industrial hydraulic equipment
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T7DS-B38-1R00-A100: 122.0ml/rev large displacement model for high-flow demand scenarios
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T7DS-B50-1R00-A100: 158.0ml/rev maximum displacement model for heavy-duty high-flow hydraulic systems
6. Key Product Characteristics
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Excellent Variable Speed Adaptability: Optimized internal structure design, stable operation at low speed, low pulsation, perfectly matching VSD and servo hydraulic control systems.
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High Pressure Durability: Adopts Denison patented stator curve and vane structure, with strong wear resistance, ensuring long-term stable operation under 210–250bar high pressure conditions.
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Low Noise Performance: Precision machining and optimized flow channel design effectively reduce hydraulic noise and mechanical vibration, meeting low-noise workshop operation requirements.
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Standardized SAE Installation: Unified SAE C 2-bolt flange specification, strong universality, convenient for equipment assembly and replacement.
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Diversified Configuration: Supports multiple displacements, rotation directions, shaft types and seal combinations to meet differentiated working condition requirements.
7. Main Application Scenarios
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Servo variable speed hydraulic systems for precision machine tools
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High-precision injection molding machines, die-casting machines and plastic machinery
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Heavy-duty pressure equipment such as hydraulic presses and bending machines
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Automated production line hydraulic power units
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Industrial variable speed drive (VSD) hydraulic systems
Complete products, original authentic products, fast delivery!Welcome to consult.
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.
