56B-22-13461 Komatsu HM350 HM400 Seal
56B-22-13461 Komatsu HM350 HM400 Seal
56B-22-13461
DUMP TRUCKS
HM400-2
HM350-2
Komatsu HM350 / HM400 Dump Truck Seal — Aftermarket Replacement (56B-22-13461)
Product Specifications
| Machine | Komatsu HM350 / HM400 |
|---|---|
| Part Type | Dump Truck Seal |
| OEM Reference | 56B-22-13461 |
| OEM | Komatsu |
| Brand | SQ |
| Machine Type | Dump Truck |
| Weight | |
| Product Group | Dump Parts |
Product Description
Direct-Fit Seal for Komatsu HM350 / HM400 Articulated Dump Trucks
Part number 56B-22-13461 is the hoist cylinder and articulation joint seal for the Komatsu HM350 and HM400 — and it's one of those parts that fails quietly until it doesn't. The seal sits at two of the highest-wear points on any articulated hauler working in quarry or mining conditions: the hoist cylinder circuit and the centre articulation pivot.
When the original seal starts weeping — you'll see hydraulic fluid tracking down the hoist ram or pooling at the pivot — the window to replace it cleanly is short. Letting it run dry accelerates cylinder bore scoring and turns a straightforward seal swap into a full cylinder rebuild. This unit matches the original lip profile, groove dimensions and material hardness, so it goes straight in. If you're cross-referencing by serial number or need to confirm the correct seal kit configuration, send us a photo and we'll verify before anything ships.
Features
Material & Construction
✓High-grade polyurethane / NBR compound: Resists hydraulic fluid degradation, pressure spikes and temperature cycling across the full HM400 operating range.
✓Precision-moulded lip geometry: Matches OEM groove dimensions and lip angle — no trimming, no leakage on first installation.
✓Direct OEM cross-reference: Built to Komatsu part number 56B-22-13461 specification for HM350 and HM400 series.
✓Customizable: Brand identity, packaging color and bulk kit configurations available on request.
Packing
Fit Equipment Models
OEM part number 56B-22-13461 is confirmed compatible with the following Komatsu articulated dump truck models:
| OEM Part No. 56B-22-13461 — Compatible Models | |
|---|---|
| HM350 Series | HM400 Series |
| Komatsu HM350-1 | Komatsu HM400-1 |
| Komatsu HM350-2 | Komatsu HM400-2 |
| Komatsu HM350-2R | Komatsu HM400-2R |
Frequently Asked Questions
Does this seal fit both the HM350 and HM400 directly?
Yes. This aftermarket seal covers the full HM350 and HM400 series — including -1, -2 and -2R variants — under OEM reference 56B-22-13461. It installs without modification. If you need to confirm by machine serial number, send us a photo of the worn seal and we'll verify the fit before shipping.
What material is the seal made from?
The seal compound is selected to match the original Komatsu specification — high-grade polyurethane or NBR depending on the application position. Both resist hydraulic fluid degradation, pressure spikes and the temperature range typical of articulated dump truck hoist and pivot circuits.
How do I know when the dump truck seal needs replacing?
The most common sign is hydraulic fluid tracking down the hoist cylinder ram or collecting at the articulation pivot. On an HM350 or HM400, catching it at first weep — before the cylinder bore scores — keeps the repair to a seal swap rather than a full cylinder rebuild.
Can I order in bulk or with custom branding?
Yes. Bulk orders, custom packaging, brand identity and kit configurations are all available. Contact us with your quantity and requirements for a quote.
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