Counter Shaft

Product Information

A procurement team orders a replacement counter shaft for a cone crusher. The bearing journals pass inspection. The gear teeth pass inspection. The shaft is installed, and the crusher goes back into production.

Two months later, the gear teeth show abnormal wear. The contact pattern is not centered. Noise and vibration have increased. Oil analysis shows rising iron content.

The root cause is not the bearing journal or the gear teeth. It is the relationship between them. A counter shaft is an integrated gear shaft — journals and teeth machined on the same part. If the teeth are not concentric with the journals, or if shaft runout is too large, the gear mesh runs at the wrong center distance and angle. The bearing may still seat. The shaft may still turn. But the mesh is now outside its design range.

Both features passed inspection. The relationship between them did not. And no one owned it.

Our Solution

ZHUOYUE machines the counter shaft as an integrated gear shaft — one common datum, one runout control, one post-heat-treatment grind, one inspection record.

1. Journals and gear teeth machined from a common datum. Controls concentricity between journal centerline and gear pitch circle — so mesh geometry stays consistent along the shaft.

2. Shaft runout controlled between bearing journals. Radial runout ≤ 0.02 mm. Shaft diameter tolerance ± 0.01 mm. Journal roughness Ra ≤ 0.8 μm. Tooth profile IT5. These values determine whether the shaft rotates on its true centerline — if runout is too large, the mesh oscillates and teeth load unevenly.

3. Gear teeth ground after heat treatment. Carburizing and quenching distort the teeth. Grinding after hardening corrects that distortion, so final tooth profile and pitch are within tolerance on the finished part.

4. Material matched to the load case. 20CrMnTi carburized and quenched: case depth 1.2–1.8 mm, surface HRC 58–62, core HRC 30–35. Hard surface resists wear; tough core absorbs impact.

5. Runout and alignment recorded before shipment. Radial runout and journal-to-gear concentricity measured on every shaft, with actual values in the inspection document.

Value to the Buyer

• Lower risk of a shaft that fits the bearing but not the gear. Alignment is measured, not assumed.

• Fewer warranty disputes. Runout and alignment data are recorded for traceability.

• Longer gear and bearing life. Correct runout keeps mesh and bearing load within design range.

• Less unplanned downtime. Functional dimensions are checked before shipment.

A shaft that fits the bearing but not the gear is not a shaft problem. It's an alignment problem. And alignment is our responsibility.

Technical Specifications

Model / Part Number Reference

Important: This table is for reference only. Crusher models and part numbers vary by production year and configuration. Please send your OEM part number, drawing, or worn sample for final confirmation.

Why Choose ZHUOYUE

Why buyers choose us:

• One supplier owns the integrated shaft — if the gear mesh does not run correctly, you deal with one supplier, not two.

• Journal-to-gear alignment measured — runout and concentricity recorded on the finished shaft.

• Gear teeth ground after heat treatment — tooth profile and pitch corrected on the finished part.

• Flexible supply — stock MOQ 1 piece; custom 30–50 pieces; framework 7–10 business days.

Comparison describes common market practice, not a specific competitor. Inspection records are available with the order.

Product Application

This counter shaft is a transmission component for cone crushers, used in:

• Hard rock mining: Copper, iron ore, gold, and nickel crushing circuits.

• Aggregate quarries: Granite, basalt, and limestone processing plants.

• Construction and recycling: Concrete rubble, asphalt, and slag crushing lines.

• Building materials and metallurgy: Clinker, slag, and industrial mineral crushing.

The shaft is selected according to the specific crusher model, load case, and operating environment. Material, heat treatment, and functional tolerances are confirmed before production.

About Us

Shenyang Zhuoyue Machinery Equipment Co., Ltd. is built by a core team with over 10 years of hands-on experience in mining machinery and crusher replacement parts. Our background covers process confirmation, manufacturing, and quality inspection for crusher structural components, wear parts, and custom machined parts.

We focus on cone crusher transmission structural parts, including countershaft complete assemblies, countershaft boxes, pinion shaft housings, pinion gears, drive gears, transmission shafts, dust covers, and seal rings. Fitment and functional tolerances are confirmed against the crusher model, OEM number, drawing, or worn sample before production.

Facility

• Production base of approximately 4,000 m² in Shenyang, Liaoning, China

• 24 R&D and technical staff

• 14 production lines: 10 machining, 2 welding, 2 assembly

• Annual capacity: 2,000 tons per year

• Metal structural components: maximum single-piece processing capacity up to 150 tons

• Full-process production lines covering forging, precision machining, stress relief, surface finishing, and quality inspection

Customers and Export Markets

We serve mining, aggregate, and construction customers in:

• Europe, Americas

• Southeast Asia: Indonesia, Philippines, Vietnam, Malaysia

• Middle East: Saudi Arabia, UAE, Oman

• Africa: South Africa, Zambia, Ghana, Kenya

• South America: Chile, Peru, Brazil

Customer names and project details are shared only with written authorization.

Exhibition

Participated in the 12th Shanghai International Mining Technology and Equipment Exhibition 2024.

Quality Control and Inspection

Quality inspection is carried out throughout the manufacturing process based on the confirmed drawing and technical requirements.

Incoming Material Inspection

• Raw material composition analysis (spectrometer per GB/T 223 / ASTM E415)

• Material grade verification against the confirmed specification

• Hardness check on incoming material

In-Process Inspection

• Critical dimensional measurement: shaft diameter, journal dimensions, gear tooth dimensions, measured against approved drawing

• Functional tolerance measurement: shaft radial runout, journal-to-gear concentricity

• Heat treatment parameter verification: carburizing temperature, quenching temperature, tempering temperature

• Surface condition inspection: visual check for cracks, voids, and surface finish

Before Shipment

• Final dimensional inspection against the approved drawing

• Shaft radial runout measurement with actual values recorded

• Journal-to-gear concentricity measurement with actual values recorded

• Surface hardness and core hardness measurement

• Effective case depth measurement

• Appearance and packaging inspection

• Components that fail dimensional or functional inspection are segregated and reworked or rejected before shipment

Additional Inspection (On Request)

• Material certificate with heat number

• Heat treatment record

• NDT for metal components: UT (ASTM A388 / GB/T 6402), MT (ASTM E709 / GB/T 15822), PT (ASTM E165)

• Inspection records provided in paper or electronic format according to order requirements

Note on NDT: UT, MT, and PT are applicable to metal components. They are not applied to PU elastomer seals.

Note on hardness standards: Brinell hardness (GB/T 231.1) is applicable to metal components. Shore A (ASTM D2240) is used for PU elastomer seals.

Order Information

Warranty

ZHUOYUE provides a limited warranty on transmission shafts and counter shafts against manufacturing defects and dimensional non-conformance.