HeavyEQ parts intelligence
Caterpillar 140H circle drive: scope the assembly and evidence
Research first. Identify the installed component. Confirm the application.
Circle-drive research begins with the exact grader designation and the assembly in front of you. Keep 140H, 140H NA and 140H ES distinct where those designations are documented. A housing, pinion, wear segment, lubrication accessory and complete group answer different sourcing needs.
Original identification research · Manufacturer model associations are general evidence · Serial and installed-assembly application outstanding
Comparison alternatives, discontinued references and actual seller availability are separate records. Use the private request to state the assembly scope and evidence you have. Select the exact machine in the request; a shared guide does not select a generation for you.
Describe the requested assembly boundary
State whether the request concerns the complete drive, housing, gearing, guide or another wear component. Record readable markings and any documented prior replacement. Ask a seller which parts are included and which are separate. An assembly name can describe a function without identifying an orderable group. Preserve the source’s terminology and ask for clarification when a general label leaves the physical scope uncertain.
Keep feature measurements labelled
A part can have several toothed or splined interfaces. If a source gives different counts without sufficiently identifying the measured features, retain both observations with their labels and hold a normalized count. Do not call the figures interchangeable, average them or choose one from a convenient specification field. Obtain documentation that identifies the actual interface before using a number in a sourcing decision. No numerical wear tolerance or adjustment setting is established here.
Treat comparison panels as research leads
A manufacturer presentation of an alternative housing is evidence of that presentation. It does not establish a universal replacement for every earlier installation. Keep direction, physical scope and application conditions with the claim, and distinguish a discontinued source record from the availability of a proposed item. Similar names and adjacent product cards cannot establish a reciprocal interchange or a chain of supersessions.
Ask a genuine seller for item evidence
Request the donor designation where established, stamped or cast markings, clear photographs of relevant interfaces, condition and any documented repair or inspection. A seller’s claim about a rebuilt drive remains attributable to that seller. Ask who performed the work and what was tested. Use the private RFQ to state the installed context and unresolved questions. Human moderation can review a real offer without turning its donor history into a verified application for every 140H.
Source references
- Caterpillar Parts Store: identify the machine before selecting an application ↗ · reviewed 15 October 2026 · public factual reference
- Caterpillar SIS2GO: serial and service-information context ↗ · reviewed 15 October 2026 · public factual reference
Original research commentary. Manufacturer drawings, catalogue tables and inventory are not reproduced.