Home » Product » KP30.51、 KP30.56 series gear pump

KP30.51、 KP30.56 series gear pump

KP20 series gear pump:  rated displacement is 25 cm3/rev 。
KP30 series gear pump:  displacement range is 3.40-23.37 cm3/rev 。
KP40 series gear pump:  displacement up to 40 cm3/rev 。
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Description

Parameter Description of CASAPPA Gear Pump KP30.51 & KP30.56

The CASAPPA KP30.51 and KP30.56 are part of the Kappa 30 series external gear pumps, featuring cast iron housing and mounting flange with superior mechanical specifications. Their compact design and high assembly rigidity ensure reliable performance and high volumetric efficiency even under high operating pressures. These pumps are ideal for applications where noise control, contamination resistance, non-flammable fluid compatibility and space-saving are critical requirements. The following are the detailed technical parameters of the two models:
Parameter Item
KP30.51
KP30.56
Pump Type
External Gear Pump (Group 3)
External Gear Pump (Group 3)
Displacement
51.83 cm³/rev (3.16 in³/rev)
56.54 cm³/rev (3.45 in³/rev)
Maximum Continuous Pressure
230 bar (3335 psi)
215 bar (3118 psi)
Maximum Intermittent Pressure
250 bar (3625 psi)
235 bar (3405 psi)
Maximum Peak Pressure
270 bar (3915 psi)
255 bar (3698 psi)
Maximum Speed
2500 min⁻¹ (rpm)
2500 min⁻¹ (rpm)
Minimum Speed
350 min⁻¹ (rpm)
350 min⁻¹ (rpm)
Flow Rate (at 1500 rpm)
77.7 L/min (approx.)
84.8 L/min (approx.)
Rotation Direction
Clockwise (CW) as standard; Counterclockwise (CCW) or reversible optional
Clockwise (CW) as standard; Counterclockwise (CCW) or reversible optional
Shaft Type
Tapered shaft 1:8 with keyway (4.0 mm key width typical)
Tapered shaft 1:8 with keyway
Mounting Flange
European standard (centering diameter 50.8 mm, 4 mounting holes typical)
European standard (centering diameter 50.8 mm, 4 mounting holes typical)
Housing Material
Cast iron (two-piece construction)
Cast iron (two-piece construction)
Fluid Requirement
Mineral oil-based hydraulic fluids (ISO/DIN) or fire-resistant fluids; viscosity range 12-100 mm²/s (cst)
Mineral oil-based hydraulic fluids (ISO/DIN) or fire-resistant fluids; viscosity range 12-100 mm²/s (cst)
Contamination Class
ISO 4406:1999 Class 19/17/14
ISO 4406:1999 Class 19/17/14
Inlet Pressure Range
0.7-3 bar (abs.) (10-44 psi); max continuous inlet pressure 5 bar (73 psi)
0.7-3 bar (abs.) (10-44 psi); max continuous inlet pressure 5 bar (73 psi)
Approximate Weight
13.5 kg (typical)
13.8 kg (typical)

General Notes

  • All pressure values are for unidirectional pumps; for reversible pumps, the maximum pressures are 15% lower than the values listed above.
  • The pumps feature high volumetric efficiency and hydro-mechanical efficiency, ensuring stable performance under arduous operating conditions. The two-piece compact construction allows for flexible integration in limited installation space.
  • Mounting flanges, shafts and ports can be customized according to SAE, European or ISO standards to meet specific application needs. Inlet and outlet ports are available in Italian flange type as standard.
  • It is recommended to use CASAPPA original filters to maintain the required contamination class and extend the pump’s service life. The pump’s service life can be further prolonged by ensuring proper fluid temperature and viscosity control.
  • The rotation direction is determined by viewing the drive shaft; counterclockwise (CCW) rotation is also available as an optional configuration.

Casappa KP series gear pump:

KP20 series KP20.11.2 KP20.14 KP20.16 KP20.20 KP20.25 KP20.31.5 KP20.4 KP20.6.3 KP20.8
KP30 series KP30.27 KP30.34 KP30.38 KP30.43 KP30.51 KP30.56 KP30.61 KP30.73
KP35 series KP35.100 KP35.63 KP35.71 KP35.80 KP35.90
KP40 series KP40.100 KP40.109 KP40.121 KP40.133 KP40.151 KP40.160 KP40.180 KP40.63 KP40.73 KP40.87

 

Shipping & Delivery

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.