CASAPPA Hydraulic Gear Pumps KP30.46D0-33S3

| Overview of CASAPPA KP30.46D0-33S3LGC/GF-N

CASAPPA KP30.46D0-33S3LGC/GF-N is a KAPPA 30 external gear pump. Casappa builds the KAPPA range around a body and a mounting flange in cast iron of superior mechanical specification, and the KAPPA 30 is a solid, compact two-piece construction that allows several functions to be packed into a reduced space. Inside, the external gear pair runs on sleeve bearings between pressure-balanced thrust plates, so the assembly stays rigid and keeps its volumetric efficiency as pressure rises and as the unit wears. In the standard CSC body design the 46.34 cm³/rev gear set is rated 210 bar continuous, 230 bar system pressure and 250 bar peak, and turns between 350 and 3,000 r/min.

Its function in a circuit is to draw oil from the reservoir and convert drive-shaft rotation into pressurised flow. This unit carries the SAE "B" 2–4 hole mounting flange (code S3), the SAE "BB" straight drive shaft (code 33) and GAS straight thread ports (BSPP) on the side of the body (position L) — a G 1" 1/4 inlet and a G 1" outlet, sealed on 55° British standard pipe parallel threads to UNI-ISO 228. The same range can be ordered with European, SAE and ISO mounting flanges, nine drive-shaft options and threaded, split-flange or flanged ports, so one pump family covers a wide spread of existing installations.

Position 2 of the code carries the letter D: looking at the drive shaft the rotation is clockwise. Position 3 is written out as 0, the version without outboard bearing, and position 8 is N, the standard Buna NBR seal. Positions 9 to 12 are not written, so the unit takes the standard choices of the code — a GAS straight thread drain port, the standard shaft seal, the CSC standard body design and no painting. Reading the pressure table size by size, 46.34 cm³/rev is the last displacement of the group that still reaches 3,000 r/min: from KP 30•51 upward the speed ceiling drops to 2,500 r/min, so this size sets the flow record of the range at 139.02 l/min.

| Dimension of CASAPPA KP30.46D0-33S3LGC/GF-N

Reference dimensions for the KP 30•46 single unit with side ports and the CSC body design. The letters correspond to the dimensional drawing.

| Rear ports — position P, CSC body design

Interface data needed with the drawing:

| Pump Installation Specifications CASAPPA KP30.46D0-33S3LGC/GF-N

The Casappa KAPPA 30 ordering code is a 12-position string: each position selects one characteristic of the unit, and reading it is the fastest way to check that a pump will fit an existing installation. Positions 1 to 8 define the unit itself; positions 9 to 12 define the drain port, the shaft-seal option, the body design and the painting.

Code structure — official example: KP 30•27 R 0 - 04 S3 - L OF/OD - N - OA - C4 - CSC - VNR01

Position 7 lists the port pair in IN/OUT order for pumps and in OUT/IN order for motors — which is why the same European flange appears as ED/EB on a pump and as EB/ED on a motor, and why the GAS pair on this displacement reads GG/GF. In the GAS family each letter is the nominal size of a British standard pipe parallel port: from KP 30•41 upward the pair is GG, the G 1" 1/4 thread of the inlet, and GF, the G 1" thread of the outlet.

| Reading your code: KP30.46D0-33S3LGC/GF-N

Two compatibility notes on this code. The 33 drive shaft — the SAE "BB" straight shaft — is listed as an available combination on the S3 flange, while the standard combination of that flange is the 04 SAE "B" spline: 05 and 33 are the two available combinations on this displacement, and they are carried on the same flange face as the standard shaft, so the flange code on its own does not fix the coupling. And the 33 shaft is not available on every displacement of the range: KP 30•31 and KP 30•41 are the two sizes excluded from it, so on the KP 30•46 the pairing is valid while on those two neighbouring sizes it cannot be ordered.

| Techspecs of CASAPPA KP30.46D0-33S3LGC/GF-N

| Performance

Torque and power are calculated on the design formulas of the range: M = Δp × V ÷ 62.83 ÷ ηhm and POUT = Δp × Q ÷ 600, with the hydraulic flow Q = V × n ÷ 1,000 × ηv, using the range's nominal efficiencies ηv = 0.98 and ηhm = 0.90 (ηt = 0.882). Torque values are the torque drawn at the drive shaft, so they are the figure to compare against the rating of the coupling.

| Interfaces and configuration

| Port data — GAS straight thread ports, BSPP, 55° British standard pipe parallel conforming to UNI-ISO 228

On this pump the inlet is the low-pressure side and the outlet the high-pressure side, so the inlet port is tightened to 60 +5 Nm (531 ÷ 575 lbf in) and the outlet to 130 +10 Nm (1,151 ÷ 1,239 lbf in). For reversible rotation, only the high-pressure-side torque is used.

| Operating conditions

Advantages

The largest displacement of the group that still turns at 3,000 r/min

Reading the KAPPA 30 speed column size by size, 46.34 cm³/rev is the last size rated at 3,000 r/min; from KP 30•51 upward the ceiling drops to 2,500 r/min. That makes 139.02 l/min theoretical the highest flow available in this cast-iron group at full speed, without moving up a group.

Cast-iron body and mounting flange

The KAPPA range is built around a body and a mounting flange in cast iron of superior mechanical specification, and the rigidity of that assembly is what holds reliability and high volumetric efficiency at high operating pressures.

Two pressure grades on the same displacement

In the standard CSC body design the 46.34 cm³/rev gear set is rated 210 bar continuous, 230 bar system pressure and 250 bar peak; specifying the High performance BSC body design in position 11 lifts the same displacement to 270 / 290 / 310 bar (3,915 / 4,205 / 4,495 psi). The Compact HSC design is not offered at this displacement, so the choice here is between standard and high performance rather than three grades.

Solid, compact two-piece construction

The KAPPA 30 packs several functions into a reduced space, which matters where the pump has to fit inside an existing housing or a tight driveline envelope.

GAS straight thread ports on the side of the body

The G 1" 1/4 inlet and G 1" outlet are 55° British standard pipe parallel ports to UNI-ISO 228, so the pipework is made up directly on the pump without flange kits, and both ports sit on the side (position L) where the access is on a mobile machine.

SAE "B" 2–4 hole mounting flange

Flange S3 conforms to SAE J744, the group 3 SAE interface, and takes either the 2-hole or the 4-hole bolt pattern — the flange that SAE group 3 machinery is built around.

SAE "BB" straight drive shaft

Shaft 33 is the largest straight-shaft family in the range, carried on the S3 flange face and available across the displacements of the group apart from KP 30•31 and KP 30•41.

Low noise emission

The external gear design keeps running noise low, which is a requirement on fan drives, municipal machinery and equipment working close to the operator.

Exceptional working life expectancy

Pressure-balanced thrust plates compensate for wear, so the pump keeps its flow as the unit ages.

High efficiency at high temperature

As the circuit oil heats up and the film thins, the cast-iron structure limits the loss of volumetric efficiency — the property Casappa specifies the KAPPA range for.

Bronze thrust plate option

Position 8 carries N Bz and V Bz variants in which the thrust plates are in bronze instead of the standard material, for duty cycles where the standard plate wear rate is the limiting factor.

Available with built-in valves

KAPPA pumps can be ordered with integrated valve functions, which removes external plumbing from the circuit.

Multiple-pump capability

The range is designed to be combined in standard version, with a common inlet and with separated stages; special connecting shafts are available up to 350 Nm (3,098 lbf in), and the pressures of a multiple pump must be limited by the transmissible torque of the drive and connecting shafts.

Wide combination choice

European, SAE and ISO mounting flanges, nine drive shafts, four port positions and threaded, split-flange or flanged ports let the same pump be matched to an existing driveline, mounting and pipework.

Suited where fluids and size are critical

KAPPA is the range Casappa positions for applications where noise, contamination, non-flammable fluids and envelope size are the deciding factors.

Reference

The KP 30 range — same series, all displacements

Every size below is a valid position 1 in the KAPPA 30 pump ordering code. Pressures are the ratings for unidirectional pumps with side ports and the CSC / CSL Standard body design; reversible pumps are limited to a maximum of 250 bar, except the sizes whose rated value is lower.

The matching gear-motor range is KM 30, with the same displacements — the two sizes are alternative position-1 entries of the same 12-position code. Above this range the heavy-duty two-piece cast-iron KAPPA 35 group continues the same construction from 63.88 cm³/rev up to 100.08 cm³/rev, for installations that need more flow.

Complete order numbers of the KAPPA 30 range

Complete KAPPA 30 pump order numbers for the KP 30 range, from KP 30•27 to KP 30•73. Reference only — each number is valid only in the exact configuration it describes.

• KP30.27D0-83E3-LED/EB-N

• KP30.27S0-83E3-LED/EB-N

• KP30.27D0-83E3-LED/EB-N-BZ

• KP30.27D0-83E3-LED/EB-N-CSC

• KP30.27S0-A5K9-LED/GD/GE-W-N-L

• KP30.34D0-83E3-LED/EB-N

• KP30.34S0-83E3-LED/EB-N

• KP30.34B0-83E3-LED/EB-N

• KP30.34D0-04S3-LED/EB-N

• KP30.34D0-04S3-LED/EB-67N4-N-A

• KP30.34-A8K9-LOF/OD-45-HSC

• KP30.38D0-83E3-LED/EB-N

• KP30.38S0-83E3-LED/EB-N

• KP30.38D0-L9P1-LGF/GC/GE W-N-L

• KP30.38S0-04S3-LME/GC/GE/B-N-L

• KP30.38-A8K9-LMD/GE-HSC-45/P;P20.16

• KP30.41S0-N4K7-LMD/GC/GE/W-N-L

• KP30.43D0-83E3-LED/EB-N

• KP30.43S0-83E3-LED/EB-N

• KP30.43D0-A8K9-LED/GD/GE-W-N-L

• KP30.46D0-33S3LGC/GF-N

• KP30.51D0-83E3-LED/EB-N

• KP30.51S0-83E3-LED/EB-N

• KP30.51D0-33S3-LGG/GF-N-CSC

• KP30.51D0-06S8-LME/OF-N-CSC

• KP30.51-A8K9-LSF/OF-M5-CSL/30.4

• KP30.56D0-83E3-LED/EB-N

• KP30.56S0-83E3-LED/EB-N

• KP30.56D0-04S3-LOG/OC/OA-N-P9

• KP30.56S0-84E4-LED/ED-N

• KP30.56S0-A8K9-POG/OF-N-CSC

• KP30.61D0-83E3-LED/EB-N

• KP30.61S0-83E3-LED/EB-N

• KP30.61D0-84E4-LEF/ED-N

• KP30.61D0-A8K9-POG/OF-N-CSC

• KP30.73D0-83E3-LED/EB-N

• KP30.73S0-83E3-LED/EB-N

Official Casappa order examples, including multiple-pump assemblies, for reference:

• KP 30•27 R 0 - 04 S3 - L OF/OD - N - OA - C4 - CSC - VNR01

• KP 30•51 - A8K9 - L MD/MC - - CSL

• KP30•51-A8K9-LMD/MC-NSL

• KP30•51-84 E4-LGF/GF/30•51-LGF/GF S

Brand Replacement

HENGYUHANG supplies a replacement for the CASAPPA KAPPA 30 gear pump series, including KP30.46D0-33S3LGC/GF-N and the rest of the KP 30 size range from KP 30•22 to KP 30•73. The replacement is built to the same group 3 dimensional envelope and the same international standard interfaces — European, SAE and ISO mounting flanges, the same drive-shaft families, and threaded, split-flange or flanged ports — so a machine originally fitted with a Casappa KAPPA 30 pump can be returned to service without modifying the driveline, the mounting or the pipework.

Replacement units are supplied to the published interface and dimension data for the KAPPA 30 group. The ordering code of the original pump is the reference used to establish fitment, so please quote the complete original order number when enquiring.

Applications

Typical applications of the KAPPA 30 gear pump family:

• Building and construction — supply pump on compact machines, excavators and loaders, roller and drum drives, auxiliary circuits

• Material handling — lifting, tilting and positioning circuits on handling equipment, cranes and aerial platforms

• Forestry — feed, conveyor, saw and attachment drives on forestry machinery

• Fan drive — engine cooling fan drives and hydraulic fan circuits

• Agriculture — supply and implement circuits on tractors, balers, harvesters, sprayers and seeders

• Industrial hydraulics — presses, mixers, machine tools and plastic injection moulding machines

• Special vehicles — municipal vehicles, cleaning vehicles and truck-mounted equipment

In these machines the pump feeds loads that run continuously at moderate circuit pressure, and is expected to hold flow under sustained load, high duty cycles and demanding ambient conditions. The cast-iron body, the sleeve-bearing gear pair and the pressure-balanced thrust plates are what let the unit keep its volumetric efficiency as circuit pressure and oil temperature rise.

Package & Shipping

Why Choose Hengyuhang?

• A hydraulic specialist, not a general trader. Quanzhou Hengyuhang Power Technology Co., Ltd. is based in Fujian, China and manufactures hydraulic gear pumps and motors, synchronous motors, multiple pump units, pumps with built-in valves and custom valve blocks.

• One-piece minimum order. MOQ is one unit, so a single machine can be put back into service without committing to a production batch.

• Model-level checking before you order. Send the complete original order number — for this page, the full KP30.46D0-33S3… string — and the configuration is run against the KAPPA 30 dimension, flange, shaft and port data before the unit is built.

• In-house production and testing. CNC machining centres, automatic gear heat-treatment lines, single-piece-flow assembly and an automatic hydraulic test bench, with ERP/MES traceability through production.

• Replacement coverage across the range. The same plant supplies replacement units for a wide list of hydraulic brands and models, which keeps a mixed machine fleet on one supplier.

• Customization support. OEM, ODM and OBM are offered, and customized packaging, graphics, nameplate and logo are available for distributor orders.

• One-year warranty. Every unit is covered by a one-year warranty.

• Responsive after-sales. Online support for installation and application questions.