2.5PB-25、2.5PB-28、2.5PB-32 gear pumps
2.5PB-5.5*、 2.5PB-8.3*、 2.5PB-11.5*、 2.5PB-13.8*、 2.5PB-16、 2.5PB-19、 2.5PB-22、 2.5PB-25、 2.5PB-28、 2.5PB-32、 2.5PB-38、 2.5PB-44
E-mail: hyd-sales2009@outlook.com
Category: Gear pump
Tags: 2.5PB gear pump, SALAMI gear pump, SALAMI Hydraulic pump
Description
Salami Gear Pump 2.5PB Series (2.5PB-25, 2.5PB-28, 2.5PB-32) Parameter & Model Description
1. Model Code Interpretation
The model codes of Salami Gear Pump 2.5PB-25, 2.5PB-28 and 2.5PB-32 belong to the same 2.5PB series, with the same series specifications and different nominal displacements. The model code interpretation and common parameters are detailed below:
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2.5PB: Series identifier, indicating a high-reliability external gear fixed displacement pump of the 2.5PB series produced by Salami, designed for medium-pressure hydraulic system requirements, with a compact structure, easy installation and stable operation, widely used in various industrial hydraulic scenarios.
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25/28/32: Nominal displacement of the gear pump, corresponding to three specifications respectively: 25 cc/rev (2.5PB-25), 28 cc/rev (2.5PB-28) and 32 cc/rev (2.5PB-32), which can meet different medium-flow hydraulic power demands.
2. Core Technical Parameters
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Parameter Item
|
Specification
|
Unit
|
|
Pump Type
|
External Gear Fixed Displacement Pump
|
–
|
|
Nominal Displacement
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25 / 28 / 32 (corresponding to three models)
|
cc/rev
|
|
Maximum Operating Pressure
|
25.0 (250)
|
MPa (bar)
|
|
Maximum Rotational Speed
|
2800
|
rpm
|
|
Minimum Rotational Speed
|
600
|
rpm
|
|
Operating Temperature Range
|
-10 – 80
|
℃
|
|
Shaft Seal Type
|
High-quality Oil Seal, corrosion-resistant and leak-proof
|
–
|
|
Mounting Type
|
Flange Mounting (ISO Standard)
|
–
|
|
Flange Bolt Specification
|
M12 (Strength Class 8.8), 4 pcs; Tightening Torque: 45 – 60 N·m
|
–
|
3. Performance Characteristics
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Adopts a compact and robust external gear structure, with strong pollution resistance and low requirements on hydraulic oil cleanliness, which can adapt to harsh industrial working environments and reduce daily maintenance costs;
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Features high efficiency (efficiency range 70% – 85%), stable output flow, and strong overload capacity, the three displacement specifications can be flexibly selected according to actual flow demands, suitable for long-term continuous operation in medium-pressure working conditions;
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The installation and connection dimensions comply with ISO international standards, facilitating replacement with domestic and foreign similar gear pump products, and the interchangeability is strong, reducing replacement and maintenance costs;
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The key components (gears, shaft, oil seal) are made of high-wear-resistant and corrosion-resistant materials, ensuring good sealing performance and long service life, effectively reducing the risk of hydraulic oil leakage and equipment failure.
4. Application Scope
Widely used in hydraulic systems of small to medium-sized machine tools, plastic machinery, agricultural machinery, engineering machinery, and other equipment that require medium displacement and medium pressure. The three specifications (25/28/32 cc/rev) can be flexibly matched according to different flow demands, providing reliable and stable hydraulic power source for various industrial scenarios.
5. Notes
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The pump should be used within the specified temperature and viscosity range, and the hydraulic oil should be regularly filtered to avoid performance degradation or component wear caused by excessive temperature, inappropriate oil viscosity or oil pollution.
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When installing, use the specified number and strength class of bolts, and tighten them according to the recommended torque to prevent bolt damage, pump loosening and hydraulic oil leakage.
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For detailed dimensions, oil port specifications, maintenance methods and spare parts information of the three models, refer to Salami official technical manual (Document No. 2.5PB-Series-001).

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