Sprocket Case Cx145C, Caterpillar 311, 312, 312D 21T 15H 325mmID

Case Cx145C Caterpillar 311 312 312D Sprockets for Positive Drive and Long Undercarriage Life

Ensure strong, consistent track drive with heavy-duty excavator sprockets engineered to mesh precisely with your track links. Built for Australian construction, earthmoving, and civil works, these sprockets deliver reliable power transmission while helping to reduce wear on your tracks and final drive components.

Compatible Models:

Case Cx130B LcCase Cx130CCase Cx135SrCase Cx145CCase Cx145DlcCaterpillar 311Caterpillar 311BCaterpillar 311CCaterpillar 311D LlrCaterpillar 312Caterpillar 312BCaterpillar 312B LCaterpillar 312CCaterpillar 312C LCaterpillar 312DCaterpillar 312D LCaterpillar 312ECaterpillar 312E LCaterpillar 312FCaterpillar 313BCaterpillar 313CCaterpillar 313F LCaterpillar 314CCaterpillar 314C LCaterpillar 314D CrCaterpillar 314D LcrCaterpillar 314F CrCaterpillar 315F LcrJcb Jz140Kato Hd512Kobelco Sk135Sr 3Kobelco Sk135Sr 5Sumitomo Sh120 1Sumitomo Sh120 2Sumitomo Sh120 3Sumitomo Sh120 5Sumitomo Sh125 3Sumitomo Sh125X 3Sumitomo Sh130 3Sumitomo Sh130 5Sumitomo Sh130 6Sumitomo Sh130Lc 5Sumitomo Sh135 3Sumitomo Sh135 5Sumitomo Sh145X 6Volvo Ec140C

Compatible with a wide range of mini and mid-size excavator makes and models. Contact us if you need help confirming the correct sprocket for your machine.

Key Features

• Heavy-Duty Tooth Profile: Deep-hardened teeth made from high-quality cast or forged steel for maximum wear resistance in abrasive ground conditions and high-torque applications.
• Optimised Power Transmission: Precisely machined pitch to match your track links, delivering smooth engagement, reduced vibration, and efficient transfer of engine power to the ground.
• Improved Undercarriage Life: Even load distribution across the track chain helps minimise shock loading and reduces wear on tracks, rollers, and final drives.
• Durable Heat Treatment: Induction-hardened wear surfaces with tough core strength to resist chipping and breakage while maintaining long service life.
• Direct-Fit Replacement: Manufactured to OEM-style dimensions for straightforward installation on existing hubs or final drives using standard workshop tools.

Product Warranty

All excavator sprockets include a 1-year warranty covering manufacturing defects, giving you confidence in demanding Australian site conditions.

How to Confirm the Correct Sprocket

To ensure proper fitment, confirm your excavator’s make, model, and serial number, then check key sprocket details such as number of teeth, overall diameter, hub type, and bolt pattern against our specifications before ordering.

If you are unsure, contact us with photos of your existing sprocket (front and side) plus a clear image of the machine ID plate, and our team can help match the correct part.

Key sprocket specs: Number of teeth, Number of fixing holes, P.C.D(mm) and Inner Diameter(mm)

Why Choose Our Sprockets

• Backed by a 1-year warranty and stringent quality checks on hardness, fit, and tooth profile.
• Fast Australia-wide shipping to minimise downtime on site.
• Expert undercarriage support to help you pair sprockets correctly with your tracks and rollers.
• Competitive pricing across common mini and mid-size excavator models.

Maximise traction, protect your undercarriage, and keep your excavator working harder for longer with high-performance drive sprockets built for tough Australian worksites.