Sprocket Segments

PT'ZM supplies high-durability sprocket segments for a wide range of bulldozer models from leading global brands. Our undercarriage parts are widely used for OEM replacement and aftermarket support, offering long-lasting performance under heavy-duty conditions.

Komatsu
D20, D31, D39, D50, D65, D85, D155, D275, D375, D475

Caterpillar
D5, D6, D7, D8, D9, D10, D11

Stock Products

D475Sprocket Segment

198-27-42281
D375Sprocket Segment

195-27-31940
D275Sprocket Segment

17M-27-41630
D155Sprocket Segment

175-27-22322
D85Sprocket Segment

154-27-12281
D65Sprocket Segment

14X-27-15111

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D11Sprocket Segment

7T1240
D10Sprocket Segment

6T9537
D9HSprocket Segment

8P8429
D9NSprocket Segment

7T1247
D8TSprocket Segment

278-2375
D8NSprocket Segment

114-6413

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Longer Service Life and Superior Durability

Our segments are produced using an innovative forging process, using 35Mn2B-H steel. We’ve replaced traditional vertical forging with horizontal hot die forging, switching from locating surfaces to precision locating blocks. This breakthrough reduces raw material waste and improves production efficiency, filling a gap in global segment manufacturing.
Advanced heat treatment techniques significantly enhance the mechanical properties, wear resistance, and toughness of the segments, extending their service life.
Machined with vertical CNC machining centers for high dimensional accuracy and a clean, professional appearance.

Certifications

GB/ISO9001 Quality Management System Certification
GB/ISO14001 Environmental Management System Certification
GB/ISO45001 Occupational Health and Safety Management System Certification

Reliable Service

In addition to standard models, we offer custom manufacturing based on client-supplied drawings or samples.
All products come with a 1-year warranty and comprehensive after-sales support.
Technical assistance is available online and offline, including remote video guidance or on-site support when needed, to ensure optimal user experience and long-term equipment reliability.

Heavy Equipment Undercarriage Parts