Pins
Holes, grooves, shoulders, end forms and hardened surfaces.
Build to drawing or sample
Custom Pins, Bushings & Shafts to Drawing
Send the drawing or sample with the material, fit, heat-treatment and inspection requirements. ROCKVANTA reviews the scope, assigns the relevant manufacturing base and prepares the production basis for quotation.
Bushings
OD, bore, length, fit, lubrication features and functional surfaces.
Shafts
Journals, shoulders, keyways, threads, runout references and mating interfaces.
Define the Part Before the Process
Buyers searching for a custom shaft manufacturer usually need more than a turned diameter. Journals, shoulders, keyways, cross holes, threads, grooves and end features can change the machining sequence, heat treatment and inspection plan.
Pins
For drawing- or sample-defined pins, include any specified holes, grooves, shoulders, end forms or hardened surfaces.
Bushings
Define the outside diameter, bore, length, mating parts, fit, lubrication features and functional surfaces so the bushing can be reviewed as a complete interface.
Shafts
Provide the journal diameters, shoulders, keyways, threads, holes, runout references and mating interfaces shown on the approved drawing or sample.
This page covers separate pins, bushings and shafts. Roller or idler assemblies, complete track groups and conveyor roller or pulley assemblies are covered in their own product categories.
Confirm the Interfaces and Critical Dimensions
Send the current drawing, sample or equipment reference. Mark the dimensions and surfaces that control assembly, movement, retention or wear, and include the mating component where it defines the required fit.
ROCKVANTA reviews tolerances against the drawing, material, process and inspection requirements. No universal tolerance is presented for this product family.
Preparing a shaft drawing? Check fits, datum references and runout before sending an RFQ
- Overall diameter, bore and length
- Journals, shoulders and transition radii
- Keyways, threads, grooves and holes
- Mating part, fit and functional movement
- Material, heat treatment and surface requirement
- Inspection records and acceptance points
A Documented Connecting-Pin Series
The following values come from two documented connecting-pin series. They show an existing product and process envelope; they are not default specifications for every pin, bushing or shaft.
For a new project, the drawing and operating requirement remain the controlling inputs.
| Series | Diameter | Length | Material | Hardening depth | Hardness | Tensile | Yield | Impact |
|---|---|---|---|---|---|---|---|---|
| LCP2001-LCP2050 | 74-160 mm | 200-1500 mm | 4340 | 3-30 mm | HRC 45-62 | 1050-1250 MPa | 800-1050 MPa | ≥45 J at -40 °C |
| LCP1001-LCP1050 | 74-160 mm | 200-1500 mm | 4140 | 3-30 mm | HRC 45-62 | 1050-1250 MPa | 800-1050 MPa | ≥45 J at -40 °C |
Plan Machining, Heat Treatment and Inspection From the Part Definition
Cutting, turning, milling, drilling and finishing are selected from the drawing and the required interfaces. Heat treatment, induction hardening or other surface requirements are reviewed only where specified for the part.
Before quotation, the team checks the machining sequence, heat-treatment allowance, finish-machining needs and inspection points as one production plan.
- Drawing & interfaces
- Machining sequence
- Heat treatment where specified
- Finish & inspection
Hardness control
Test location, method and acceptance range follow the applicable part or series requirement.
Set Inspection Requirements for the Quoted Part
Dimensional checks, material documents, hardness testing and NDT can be planned where they apply to the order. The inspection scope and requested records should be stated before production or shipment.
For the documented connecting-pin control described above, hardness and magnetic-particle inspection are performed on every pin, with tensile and yield testing by batch. This coverage belongs to that connecting-pin series and is not a general promise for every product on this page.
Review Quality & Inspection
Magnetic-particle inspection
Coverage is defined for the applicable connecting-pin series or project requirement.
Questions Before You Send the Drawing
Can you manufacture from a sample when no final drawing is available?
Yes, a sample can be reviewed as an input. Critical interfaces, material, heat treatment and acceptance requirements still need to be confirmed before the manufacturing scope is released.
Are the LCP series values available for every pin or shaft?
No. The published ranges belong to the two documented connecting-pin series. Other parts are reviewed against their own drawing and operating requirements.
Do you offer standard stock sizes?
This site presents project-based and drawing-led supply. Stock, MOQ and lead time are confirmed for the specific enquiry.
What inspection records can be requested?
Dimensional records, material documents, hardness results and NDT records can be discussed where applicable. State the required documents and hold points in the RFQ.
Assign Pin, Bushing and Shaft Production to the Relevant Base
ROCKVANTA owns and operates five specialized manufacturing bases. The team reviews the drawing, material, required processes, inspection and project requirements, identifies the most suitable base, and coordinates any supporting work.
The RFQ confirms the selected base, included processes, available capacity and lead time for the project.
How We Select a Manufacturing Base
Plan Your Excavator-Pin Order
Send the drawing or model reference, material, technical requirements and acceptance criteria. We use these details to confirm the pin specification, sample route and production quotation.
Samples and production
- Material programmes
- 4340 and 4140
- Sample or trial order
- 5 pieces
- Sample lead-time reference
- 10 days
- Production lead-time reference
- 15 days
- Monthly supply reference
- 2,000–3,000 pieces
- Special material batches
- A 20-tonne material order may apply to specified grades
- Stock preparation
- Blanks can be held for commonly used materials
Commercial and delivery terms
- Sample charges
- USD or CNY; sample charges can be credited against a subsequent order
- Tooling
- Charges agreed according to tooling ownership and reuse
- Order quantities
- Volume-based pricing agreed in the quotation
- Packing
- Wooden cases and rust protection; case size and quantity to order
- Shipping ports
- Shanghai or Qingdao
- Payment reference
- 30% advance; balance before shipment
- Warranty reference
- 12,000 operating hours or 2 years; coverage and start date agreed for the order
These planning terms apply to excavator-pin enquiries. The quotation confirms quantity, material availability, lead-time basis and warranty coverage for the selected part.
Prepare a Quote-Ready Enquiry
- Part name, application and equipment reference where relevant
- Current drawing, sample, photograph or 3D model
- Material grade and heat-treatment requirement
- Fits, mating parts and critical dimensions
- Quantity, project stage and required inspection records
- Destination and packing requirements
For excavator-pin enquiries, the sample, production and delivery references above help plan the order. Send the drawing and quantity so we can confirm the material, schedule and price.
Pin and bushing selection guide →
Third-party inspection
If required, the buyer may arrange an inspector, nominate an inspection body or ask ROCKVANTA to coordinate with a suitable provider. Inspection timing, scope and cost must be agreed before the order or shipment. Inspection, reinspection and report fees are buyer-paid.
ROCKVANTA Machinery — EONBIRD GLOBAL LIMITED