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Poland
HYDRO CZĘŚCI JAKUBIEC SPÓŁKA JAWNA
Kapitałowa 4
35-213 Rzeszów
Call us:
+48 17 229 37 05
NIP: 8133391713

Crankshafts and Seals – Perkins, CAT, JCB

The heart of the crank assembly. We offer brand new (forged) crankshafts, oil seals, and gears from KMP Brand, Perkins, and OEM.

Parts for engines: Perkins (series 1004, 1104, 4.236), CAT (3054, 3056, C3.3), and Isuzu/JCB (4HK1, Dieselmax).

Forged STD Shafts
OEM Oil Seals
KMP Brand
⚠️ Don't grind a cracked shaft! Buying a new standard shaft is safer. Send the engine number – we will select the shaft and bearings.
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CRANKSHAFT

KMP Brand Forged Shafts – Better than Regrinding

Regrinding an old shaft can be risky (micro-cracks, material fatigue). We offer brand new, forged crankshafts in standard size (STD). They are ready to install, balanced, and have hardened journals, ensuring factory durability in Turbo engines.

Crankshaft Oil Seals

Oil leaking from the gearbox or pulley is a common fault. We stock:

  • Rear seals (flywheel side): Often integrated with an aluminum housing (in newer Perkins engines).
  • Front seals (timing side): Made of Viton, resistant to high temperatures.
  • Wear Sleeves (Speedi-Sleeve): Allow you to save a shaft with a worn groove under the seal.

💡 Buying a new crankshaft?

You must replace the bearings with new STD ones. Check:

Frequently Asked Questions (FAQ)

Are KMP Brand shafts forged or cast?

Most KMP shafts for Perkins and CAT engines are Forged Steel, which ensures significantly higher fatigue strength than cheaper Cast Iron replacements.

Is the shaft sold with bearings?

Some kits (e.g., KMP Brand) may include bearings, but typically the shaft is sold "bare". Bearings must be selected separately in the correct size (usually STD for a new shaft).

Need a crankshaft gear?

Timing and oil pump gears are shrink-fitted. If yours was damaged during removal, we will select a new gear matching the tooth count.

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