T7B/T7BS series Vane pump
T7B series: suitable for high/low pressure hydraulic circuits, supporting double or triple pump combinations, with a maximum pressure of 300 bar.
T7BS series: It is a variant or extended series of T7B, optimized for specific operating conditions.
T7D/T7DS series: high-pressure vane pump, supports SAE spline shaft, allowing the pump shaft to be directly connected to the motor shaft.
T7E/T7ES series: high-pressure cylindrical vane pump with a wide displacement range and a maximum pressure of 240 bar.
Specifications of Parker Denison T7B & T7BS Series Vane Pumps
1. Basic Information
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Item
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Description (T7B / T7BS)
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Product Series
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Parker Denison T7B, Parker Denison T7BS Series Vane Pumps
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Pump Type
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Single Fixed Displacement Vane Pump (optimized for medium-high pressure industrial and mobile machinery applications, ideal for high-pressure small-flow clamping and low-pressure large-flow movement dual-circuit scenarios)
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Core Technology
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Denison Advanced Medium-High Pressure Vane Technology, double-lip vane design with wear-resistant coating, enhanced hydraulic balance structure, low noise design (3~5 dB lower than ordinary pumps), and strong contamination resistance to adapt to harsh working environments
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Mounting Type
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T7B: ISO 2-bolt mounting flange; T7BS: SAE B-type 2-bolt mounting flange (SAE J744 standard), both suitable for small and medium-sized motor adaptation and narrow installation space
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Weight Range
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Approx. 15kg – 28kg, varies by displacement size and optional configurations (T7BS is slightly heavier due to SAE flange structure, ensuring stable installation under high-pressure operation)
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Port Configurations
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Up to 64 port position combinations, optional port sizes (3/4″ to 1.5″), with inlet port connection up to 1.5″ 4-bolt SAE flange (J518) to adapt to medium-high pressure and dual-circuit flow requirements
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2. Key Technical Parameters
2.1 Pressure & Speed
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Parameter
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Value (T7B / T7BS)
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Remarks
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Maximum Intermittent Pressure
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Up to 320 bar / Up to 320 bar
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Intermittent operation duration: ≤ 8% of total operating time; suitable for short-term high-pressure peaks in clamping circuits and complex hydraulic systems
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Maximum Continuous Pressure
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Up to 290 bar / Up to 290 bar
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Recommended for long-term medium-high pressure operation; ideal for high-pressure small-flow clamping scenarios, ensuring stable workpiece clamping rigidity
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Speed Range
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500 – 3000 rpm (industrial type); 35 – 2800 rpm (variable-speed servo operation); maximum speed up to 3600 rpm for short-term operation
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Speed adjustable to meet system energy-saving needs; low-speed pressure maintaining can reach 35 rpm, suitable for servo control machines
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Minimum Stable Speed
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Approx. 35 rpm / Approx. 35 rpm
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Ensures stable pressure maintaining at low speed, adequate lubrication of internal components, and avoids vane jamming in long-term pressure maintaining scenarios
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Volumetric Efficiency
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Typically 0.92 – 0.95 / Typically 0.92 – 0.95
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High volumetric efficiency minimizes energy loss and system heat generation, improving the efficiency of dual-circuit hydraulic systems
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Noise Level
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≤ 71 dB(A) @ 1800 rpm / ≤ 70 dB(A) @ 1800 rpm
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Optimized vane and cam ring profile, 3~5 dB lower than ordinary vane pumps, reducing pipeline vibration and noise pollution in workshops
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2.2 Displacement Specifications
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Displacement Code
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Displacement (ml/rev)
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Applicable Series
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Remarks
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B05
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15.9
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T7B, T7BS
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Mini displacement, suitable for high-pressure small-flow clamping circuits
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B08
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25.4
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T7B, T7BS
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Small displacement, widely used in small milling machine tailstock clamping systems
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B10
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31.8
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T7B, T7BS
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Medium-small displacement, suitable for low-pressure large-flow movement circuits of milling machine tailstocks
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B14
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44.3
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T7B, T7BS
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Universal displacement, balanced high-pressure clamping and low-pressure movement performance
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B17
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54.4
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T7B, T7BS
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Medium displacement, ideal for medium-sized milling machine high-pressure clamping circuits
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B20
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66.0
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T7B, T7BS
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Medium-large displacement, suitable for medium-high pressure, medium-flow industrial hydraulic systems
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B25
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79.4
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T7B, T7BS
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Large displacement, high flow output, suitable for high-demand medium-high pressure systems
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B31
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99.2
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T7B, T7BS
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Maximum displacement for the series, suitable for large-scale medium-high pressure industrial and mobile machinery
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2.3 Other Key Parameters
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Contamination Resistance: Double-lip vane with wear-resistant coating enhances contamination resistance, adapting to machine tool cutting fluid pollution environment (NAS 6 grade or higher is recommended for optimal performance; NAS 5 grade for harsh conditions)
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Temperature Range: -20°C ~ +85°C (T7B / T7BS); adjustable to -30°C with special low-temperature hydraulic oil, suitable for most industrial and mobile machinery environments
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Shaft Type: Keyed shaft (SAE F) as standard; splined shaft (SAE B, 13 teeth) optional for both series, with strong torque-bearing capacity to adapt to high-pressure and variable-speed operation
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Rotation Direction: Standard clockwise (R); counterclockwise (L) optional, stable transmission and consistent output even under variable-speed and high-pressure conditions
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Seal Type: Standard Nitrile Rubber (NBR); Viton, EPDM or PTFE seal materials optional based on working conditions and hydraulic medium, ensuring good sealing performance under high pressure
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Flow Rate: Up to 280 L/min @ 2000 rpm (varies by displacement size; T7BS has the same flow capacity as T7B with the same displacement, suitable for dual-circuit flow matching)
3. Applicable Medium & Environment
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Applicable Medium: Mineral oil, biodegradable oil, water-based hydraulic fluid, etc.; recommended viscosity 12 ~ 110 cSt for stable medium-high pressure and variable-speed operation
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Applicable Fluids: Compatible with fire-resistant fluids (phosphate esters, water glycols) and biodegradable fluids (organic esters, rapeseed oil), ensuring reliable performance in harsh industrial environments
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Application Fields: Medium-high pressure industrial hydraulic systems, mobile machinery (e.g., injection molding machines, die-casting machines, hydraulic presses, milling machines, lathes, construction machinery, agricultural machinery, mining machinery, marine hydraulic systems), especially suitable for high-pressure small-flow clamping and low-pressure large-flow movement dual-circuit scenarios
4. Core Features
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Medium-High Pressure Adaptability: Optimized structural design and double-lip vane technology ensure stable operation under high-pressure conditions, ideal for clamping circuits and complex hydraulic systems
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Dual Mounting Options: T7B (ISO 2-bolt flange) and T7BS (SAE B-type 2-bolt flange) meet different industrial mounting standards, adapting to small and medium-sized motors and narrow installation spaces
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Low Noise & High Stability: Optimized vane and cam ring profile, 3~5 dB lower noise than ordinary pumps, low pressure pulsation, ensuring stable transmission and reducing operational failures
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Wide Speed Range: 35~3600 rpm adjustable speed, suitable for servo control machines and energy-saving systems, with stable low-speed pressure maintaining performance
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Strong Contamination Resistance: Double-lip vane design with wear-resistant coating, adapting to harsh working environments such as machine tool cutting fluid pollution
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Easy Maintenance: Integrated cartridge design allows quick disassembly and replacement, reducing downtime and maintenance costs, suitable for industrial mass production scenarios
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.
