InterpumpAccessories & Installation

Interpump GEARBOX RS500 - D. 1" FOR PUMP WS201 R US

SKU 3G-ITP-00024

Also listed as: ZONDA5061 · ZONDA5 061

Brand

Interpump

Item

GEARBOX RS500 - D. 1" FOR PUMP WS201 R US

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Interpump

for pumps

47

engine flange

SAE J609-A-B 

engine shaft in

1

engine shaft mm

25.4 

transmission ratio i

2.2

weight without oil kg

4.2

max power transmission hp

25

max power transmission kw

18.5 

Datasheet Content

FE5102




TECHNICAL INFORMATION
Flow (L/min)                        2,0 / 2,4
Flow (US Gpm)                       0,52 / 0,64
Rotation regime (rpm)               1450 / 1750
Pressure (MPa)                      10
Pressure (bar)                      100
Pressure (psi)                      1450
Power (hp)                          0,57 / 0,68
Power (kW)                          0,42 / 0,50
Overall dimensions L x l x h (mm)   177x175x130
Weight (kg)                         5,2




FE5102                                            3/22/2026   Page 1 - 8
Copyright INTERPUMP GROUP S.P.A
FE5102

     Documents

Male shaft (key) - GAS

Male shaft (key) + integrated valve




FE5102                                3/22/2026   Page 2 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - GAS




FE5102                                3/22/2026   Page 3 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - GAS

Pos.     Code           Description                  Qty Notes
KIT97    34009701                                    1
KIT96    34009601                                    1
KIT86    34008601                                    1
KIT83    34008301                                    1
KIT157   34015701                                    1
KIT123   34012301       KIT 123 INTAKE/DELIVERY      1
                        VALVE
46       98210000       PLUG G3/8X13                 1
45       51209051                                    1
44       96738000       WASHER 17,5X23X1,5           1
43       98204100       PLUG G1/4X9                  1
42       36711501       INTAKE/DELIVERY VALVE        6
41       98221600                                    6
40       90384700       O-RING 20,29X2,62(3081)      6
39       36202551       VALVE CAGE                   6
38       94737600       SPRING D. 9,4X14,8           6
37       36200176       VALVE PLATE                  6
36       36200366       VALVE SEAT                   6
35       90384100       O-RING 17,12X2,62 (3068)     6
34       96693800       WASHER 6,4X10X0,7            8
33       99194300                                    8
32       51120041                                    1
31       51100051       HEAD RING D. 15              3
30       90262000       PACKING D. 15X25X5/3,1       3
29       51080070                                    3
28       90360400       O-RING 25,12X1,78 (2100)     3
27       90383500       O-RING 15,08X2,62 (119)      3
26       92221600       NUT M8X13X5                  3
25       44211570       WASHER D. 8                  3
24       51040009                                    3
23       90357300       O-RING D. 5,28X1,78 (2021)   3

22       90502200       ANTI-EXTRUSION RING          3
21       96707000                                    3
20       90156500                                    3
19       91487700       KEY 8(h9)X7X25 UNI 6604/A    1


18       51023065                                    1
17       99180700       SCREW M 6x12 UNI 5739        4
16       50150074       CRANKCASE COVER              1
15       90164100       OIL SEAL D.25X62X10          1
14       90063500       CIRCLIP D. 25 UNI 7435       1




FE5102                                                           3/22/2026   Page 4 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) - GAS

Pos.   Code             Description                Qty Notes

13     91832800                                    1
12     98210300         OIL DIP-STICK G3/8X51      1
11     99186700         SCREW M 6x18 UNI 5931      4
10     51160022                                    1
9      90391700                                    1
8      97731000                                    3
7      51030122                                    3
6      51050056                                    3
5      97596800         OIL LEVEL INDICATOR G3/4X15 1


4      91801400                                    1
3      90383300         O-RING 13,95X2,62 (3056)   1
2      98210050         PLUG G3/8x13 TE22          1
1      51010622                                    1




FE5102                                                         3/22/2026   Page 5 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) + integrated valve




FE5102                                             3/22/2026   Page 6 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) + integrated valve

Pos.     Code           Description                Qty Notes
KIT97    34009701                                  1
KIT96    34009601                                  1
KIT86    34008601                                  1
KIT83    34008301                                  1
KIT267   34026701                                  1
KIT157   34015701                                  1
KIT123   34012301       KIT 123 INTAKE/DELIVERY    1
                        VALVE
62       51209051                                  1
61       36005470                                  1
60       99126100                                  1
59       94740000                                  1
58       36323770                                  1
57       90502000                                  1
56       90357000       O-RING 4,48X1,78 (2018)    1
55       90356900                                  1
54       90500700                                  1
53       36005570                                  1
52       36323966                                  1
51       10008566                                  1
50       90357600                                  1
49       36005670                                  1
48       90382300       O-RING 9,92X2,62 (112)     1
47       98210000       PLUG G3/8X13               1
46       96738000       WASHER 17,5X23X1,5         1
45       98205700       PLUG M14X1,5X9             1
44       98204100       PLUG G1/4X9                2
43       10007870       NIPPLE D. 3 G3/8           1
42       36711501       INTAKE/DELIVERY VALVE      6
41       98221600                                  6
40       90384700       O-RING 20,29X2,62(3081)    7
39       36202551       VALVE CAGE                 6
38       94737600       SPRING D. 9,4X14,8         6
37       36200176       VALVE PLATE                6
36       36200366       VALVE SEAT                 6
35       90384100       O-RING 17,12X2,62 (3068)   2
34       96693800       WASHER 6,4X10X0,7          1
33       99194300                                  1
32       51120141                                  1
31       51100051       HEAD RING D. 15            3
30       90262000       PACKING D. 15X25X5/3,1     3




FE5102                                                         3/22/2026   Page 7 - 8
Copyright INTERPUMP GROUP S.P.A
Illustration Male shaft (key) + integrated valve

Pos.   Code             Description                  Qty Notes

29     51080070                                      3
28     90360400         O-RING 25,12X1,78 (2100)     3
27     90383500         O-RING 15,08X2,62 (119)      3
26     92221600         NUT M8X13X5                  3
25     44211570         WASHER D. 8                  3
24     51040009                                      3
23     90357300         O-RING D. 5,28X1,78 (2021)   3


22     90502200         ANTI-EXTRUSION RING          3
21     96707000                                      3
20     90156500                                      3
19     91487700         KEY 8(h9)X7X25 UNI 6604/A    1


18     51023065                                      1
17     99180700         SCREW M 6x12 UNI 5739        4
16     50150074         CRANKCASE COVER              1
15     90164100         OIL SEAL D.25X62X10          1
14     90063500         CIRCLIP D. 25 UNI 7435       1
13     91832800                                      1
12     98210300         OIL DIP-STICK G3/8X51        1
11     99186700         SCREW M 6x18 UNI 5931        4
10     51160022                                      1
9      90391700                                      1
8      97731000                                      3
7      51030122                                      3
6      51050056                                      3
5      97596800         OIL LEVEL INDICATOR G3/4X15 1


4      91801400                                      1
3      90383300         O-RING 13,95X2,62 (3056)     2
2      98210050         PLUG G3/8x13 TE22            1
1      51010622                                      1




FE5102                                                           3/22/2026   Page 8 - 8
Copyright INTERPUMP GROUP S.P.A

Technical Documents

(1)

Technical Data Sheet

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Interpump Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Interpump GEARBOX RS500 is a 1-inch accessory gearbox designed for the WS201 R US pump. It features an SAE J609-A-B engine flange, accepts a 1-inch (25.4 mm) engine shaft, and has a transmission ratio of 2.2. With a maximum power transmission of 25 hp (18.5 kW) and a weight of 4.2 kg without oil, it supports pumps up to 47 units.

Frequently Asked Questions

Where can I buy the Interpump RS500 gearbox worldwide?

3G Electric is an authorized distributor of Interpump gearboxes. We source the RS500 (1" SAE J609-A-B) and arrange worldwide delivery with full logistics support. Contact us for lead time and pricing on part ZONDA5-061.

What is the transmission ratio and power rating of the RS500 gearbox?

The Interpump RS500 delivers a 2.2:1 transmission ratio and handles up to 25 HP (18.5 kW) power transmission. Engine shaft diameter is 25.4 mm SAE J609-A-B flange. Weight is 4.2 kg without oil.

Is the RS500 gearbox compatible with the WS201 R pump?

Yes, the Interpump RS500 gearbox (1" bore) is designed for the WS201 R pump. Verify your pump's engine flange matches SAE J609-A-B and shaft diameter is 25.4 mm before ordering.

Used in

Common applications for Interpump

Shipyard hull cleaning and surface prep — HT100 and W951 paired with dual-lance guns for dockyard service

Petrochemical heat-exchanger descaling — WS-series stainless pumps for neutral-pH cleaning chemistry

Outdoor HVAC condenser mist cooling — ZP180 pumps on rooftop chiller decks

Textile fibre-finishing — W170 and W270 for mist-jet application across drying lines

Municipal water treatment — W951 motor pumps for high-pressure disinfection chemical injection

Interpump Products

3G Electric supplies Interpump accessories & installation. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all Interpump products →Contact our engineers →