Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
Rubber impeller Caterpillar 3228595 is a flexible vane pump component for replacement, maintenance and fluid handling applications. Dimensions, blade profile, hub structure, shaft connection, rubber compound, Shore A hardness, tolerance and packaging must be confirmed by drawing, sample or official specification before production.
The rubber impeller Caterpillar 3228595 is a flexible vane pump component used as a replacement reference for compatible pump assemblies. This page does not assume unconfirmed dimensions or material data. Outer diameter, height, blade quantity, shaft connection, insert structure, rubber compound and hardness must be confirmed by drawing, official specification or physical sample before production.
Product Overview
The Caterpillar 3228595 Rubber Impeller (also listed as 322-8595) is a 10-vane flexible Neoprene impeller manufactured as a direct-fit replacement for Caterpillar auxiliary sea water pumps used on marine diesel engines. This part is directly interchangeable with Sherwood 30000 and 30000K impellers, reflecting the fact that Sherwood pumps are commonly used as the auxiliary raw-water cooling pump on Caterpillar marine diesel installations. It is widely used across Caterpillar C32 and 3412E marine diesel engine platforms, and has become a standard reference part number across the aftermarket flexible impeller supply chain.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 3228595 (322-8595) |
| Material | Neoprene (CR) rubber |
| Number of Blades | 10 vanes/blades |
| Impeller Diameter | 114.4 mm (4-1/2″) |
| Impeller Width/Depth | 109.6 mm (4-5/16″) |
| Shaft Hub Diameter | 24 mm (0.93″) |
| Hub Insert Type | Brass, 10-tooth spline drive (some versions with 3/4-UNF(16) thread for puller tool removal) |
| Approx. Weight | 2.50 lbs (~1.13 kg) |
| Application Pump | Auxiliary sea water pump (Sherwood G3001X, G22012-01, G22012X, G3001-01, G3001-02 |
What Is the Caterpillar 3228595 Impeller?
The Caterpillar 3228595 is a flexible Neoprene rubber impeller with 10 curved vanes mounted on a brass spline-drive hub, designed for use in bronze-bodied Sherwood auxiliary sea water pumps fitted to Caterpillar marine diesel engines. As the pump shaft rotates, the flexible Neoprene vanes deform and re-expand within the pump housing to draw in and discharge raw cooling water — a self-priming action characteristic of flexible impeller pump design. This impeller is the OEM match for the auxiliary cooling circuit on Caterpillar C32 and 3412E marine engines and is fully cross-matched across the Sherwood, JMP Marine, CEF, and other aftermarket impeller brands.
Cross-Reference & Compatibility
| Brand | Part Number |
|---|---|
| Caterpillar (CAT) | 3228595, 322-8595 |
| Sherwood | 30000, 30000K, 30000K-SHW |
| Ancor (aftermarket) | AN5750 |
| JMP Marine (aftermarket) | 8459, 8459K, 8459-01, 8459-01K (kit) |
| CEF (aftermarket) | 500193GX-SAM |
Engine applications: Caterpillar C32 and 3412E marine diesel engines, used with Sherwood pump models G3001X, G22012-01, G22012X, G3001-01, and G3001-02.
Related service kits: Sherwood 25017/25154 minor/major seal kits (JMP JSM0140/JSK0140) are commonly serviced alongside this impeller as part of a full auxiliary pump overhaul.
Why Neoprene Is Used for This Impeller
- Wide chemical resistance — Neoprene tolerates prolonged exposure to raw seawater and general engine cooling circuit conditions typical of auxiliary marine cooling pumps
- Industry-standard flexibility — Neoprene remains the benchmark material for heavy-duty flexible impeller pumps across Caterpillar and Sherwood auxiliary pump platforms
- High vane count for flow volume — the 10-vane configuration provides strong displacement per rotation, suited to the auxiliary cooling demands of large-displacement C32 and 3412E diesel engines
- Reliable spline engagement — the molded-in brass 10-tooth spline drive insert ensures secure, slip-free torque transfer from the pump shaft; newer designs incorporate a 3/4-UNF(16) internal thread allowing easy removal with a standard impeller puller tool
Installation & Maintenance Notes
- Installation orientation — vane curvature must be installed in the correct rotational direction per the pump housing orientation to ensure proper self-priming functionProduct Specifications
- Dry-running caution — like all flexible impeller pumps, this impeller must never be run dry, even briefly, as the Neoprene vanes can overheat and deform without water lubrication and cooling
- Recommended replacement interval — typically serviced on a scheduled interval aligned with Caterpillar’s auxiliary sea water pump maintenance program, or immediately upon signs of reduced cooling flow
- Service kit availability — commonly supplied as a complete kit including a matching O-ring and lubricant/glycerine for a full service replacement in one part number
Installation & Maintenance Notes
- Installation orientation — vane curvature must be installed in the correct rotational direction per the pump housing orientation to ensure proper self-priming function
- Dry-running caution — like all flexible impeller pumps, this impeller must never be run dry, even briefly, as the Neoprene vanes can overheat and deform without water lubrication and cooling
- Recommended replacement interval — typically serviced on a scheduled interval aligned with Caterpillar’s auxiliary sea water pump maintenance program, or immediately upon signs of reduced cooling flow
- Service kit availability — commonly supplied as a complete kit including a matching O-ring and lubricant/glycerine for a full service replacement in one part number
Custom & OEM Manufacturing Capability
- Custom branding — OEM and ODM orders accepted with customer logo and packaging
- Material options — NBR, NR, EPDM, Silicone, Neoprene (ACM), HNBR, SBR
- Hardness range — 30–95 Shore A
- Temperature range — -40°C to +300°C depending on compound selection
- Dimensional tolerance — ±0.05 mm
- Hub options — precision-machined brass spline drive, puller-thread hub, keyed hub, or custom insert configuration
- Certification — ISO 9001 compliant manufacturing available
Why Source from Julong Rubber?
- Full cross-reference matching engineered to Caterpillar, Sherwood, Ancor, and JMP Marine dimensional equivalents
- ISO 9001 certified manufacturing and inspection
- Full elastomer range — Neoprene as standard, plus NBR, NR, EPDM, Silicone alternatives
- Precision brass spline hub molding — secure torque transfer with special bonding between brass insert and rubber body
- Low MOQ with tiered volume pricing
- Fast delivery — standard lead times for stock cross-reference parts
- OEM/ODM capability — custom logo, packaging, and specification accepted
- Heavy-duty marine diesel application experience — cargo ships, tugboats, generators, industrial vessels
FAQ
Can this rubber impeller be supplied as a Caterpillar 3228595 replacement?
Yes, it can be reviewed as a replacement reference for Caterpillar 3228595 applications. However, the part number alone is not enough for production approval. Dimensions, shaft connection, blade profile, material and pump compatibility must be confirmed by drawing, sample or official specification.
Why are exact dimensions not listed on this page?
Exact dimensions are not listed because no confirmed drawing, official specification or measured sample data has been provided. For pump impellers, unsupported dimensions can cause installation failure, reduced flow, excessive friction or early blade damage. Confirmed data is required before production.
Can the impeller be manufactured from an old sample?
Yes. A physical sample can be used for reverse engineering when the original drawing is unavailable. The sample should be checked for wear, deformation and blade damage. Critical dimensions and operating conditions should still be confirmed before tooling and sample production.
How should buyers select the rubber material?
Rubber material selection depends on the working liquid, temperature, rotation speed, dry-running risk, oil exposure and chemical contact. Buyers should provide the exact media and service conditions. Material selection depends on the application conditions.
Is tooling required for this rubber impeller?
Tooling is usually required for molded rubber impellers with custom blade geometry, hub structure or insert design. Tooling cost depends on the drawing and product structure. Prototype samples can be reviewed before batch production.
Are samples available before bulk production?
Samples are available upon request. Sample preparation depends on the confirmed dimensions, rubber compound, Shore A hardness, insert structure, tooling status and inspection requirements. Please provide a drawing, official specification or physical sample for review.
Request a Custom Quote
Send your Caterpillar 3228595 rubber impeller drawing, official specification, pump model or physical sample for review. Please include dimensions, shaft connection, blade profile, rubber material, hardness, working liquid, temperature, speed, rotation direction, quantity and packaging requirements.
