Komatsu Dozer Blade Cylinders
Blade hydraulic cylinders for Komatsu crawler dozers, covering the lift, tilt, and angle cylinders that move the blade across the D-series lineup. Whether you're stopping a leak on a D65 or rebuilding the blade circuit on a D41, we carry complete cylinders, rods, and seal kits from our inventory of 20,000 parts. New and remanufactured options are available. If you can't find the cylinder you need, call or text and we'll track it down.
Fits Models At A Glance
D20, D21, D31, D37, D39, D41, D51, D53, D58, D61, D65, D85, D155, D275, D355, D375, D475 and their E, P, EX, PX, A, and S variants
What's In This Category
Blade Lift Cylinders: the cylinders that raise and lower the dozer blade, available as complete assemblies.
Blade Tilt Cylinders: the cylinders that tilt the blade side to side for grading and cutting, on tilt and power-angle-tilt blades.
Blade Angle Cylinders: the cylinders that angle the blade forward left or right on angle and power-angle-tilt (PAT) blades.
Cylinder Rods: replacement rods for bent, scored, or worn blade cylinders.
Seal & Packing Kits: full seal kits to stop leaks and rebuild a blade cylinder without replacing the whole unit.
Confirming Fitment
Which blade cylinders a machine has depends on its blade type: a straight blade uses lift cylinders, while angle and power-angle-tilt blades add tilt and angle cylinders. Bore and stroke also change across serial-number breaks within the same model. Have your model, serial number, and blade type ready before ordering, and when in doubt, call us to verify.
Frequently Asked Questions
What blade cylinders does a Komatsu dozer use?
A Komatsu dozer uses lift cylinders to raise and lower the blade, and depending on the blade type, tilt cylinders to angle it up and down at the ends and angle cylinders to swing it left or right. Straight blades typically use lift cylinders only, while power-angle-tilt blades use lift, tilt, and angle cylinders together.
Which Komatsu dozer models do these blade cylinders fit?
These blade cylinders fit Komatsu D-series crawler dozers, from the smaller D20, D21, and D31 machines up through the D41, D51, D61, D65, D85, and the large D155 and up. Fitment depends on model, serial number, and blade configuration, so confirm your exact machine before ordering.
What is the difference between lift, tilt, and angle cylinders?
Lift cylinders raise and lower the whole blade. Tilt cylinders drop one corner of the blade lower than the other for cutting grade. Angle cylinders swing the blade forward to the left or right so material rolls off to the side. Each is a different cylinder, so order by the function you're repairing.
Can I just replace the seals instead of the whole cylinder?
Usually, yes. If the barrel and rod are still straight and unscored, a seal and packing kit will stop most leaks and restore the cylinder for far less than a full replacement. If the rod is bent, pitted, or the bore is worn out, a rod or complete cylinder is the better call. We stock both.
How do I order the right blade cylinder for my dozer?
Start with your model, full serial number, and blade type, since Komatsu changed cylinders across serial breaks and blade configurations. Measuring the bore and stroke of the old cylinder is the surest confirmation. Call or text (800) 909-7060 with those details and we'll match the correct lift, tilt, or angle cylinder.
Get The Right Part The First Time
Not sure which cylinder fits your machine? Send your model and serial number and we'll match it.
Call or Text (800) 909-7060
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