Precision CNC-Machined Eccentric Crankshafts / Eccentric Shafts
Category:
The shaft body features multiple sets of eccentric protruding sections, with the eccentricity customizable to non‑standard specifications per the drawing. The stepped surfaces serve as locating and limiting features for bearings and seals, while coaxiality and eccentricity dimensions are subject to stringent control.
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1. Material: 45# quenched and tempered steel, 40Cr alloy steel
2. Manufacturing Process: CNC turning and milling, with dynamic balancing performed on the eccentric sections; critical working surfaces undergo precision grinding.
3. Dimensional Features: The shaft body features multiple sets of eccentric protruding sections, with eccentricity dimensions customizable to non‑standard specifications per the drawing. Step surfaces serve as locating and limiting features for bearings and seals, while coaxiality and eccentricity tolerances are subject to stringent control.
4. Surface Treatment: The shaft is precision-turned to achieve a bright metallic finish, and can be further treated—upon request—with high-frequency induction hardening, chrome plating, or blackening to enhance wear resistance, impact resistance, and corrosion protection.
5. Product Applications: Serves construction machinery manufacturers, hydraulic equipment suppliers, mold makers, and automation system integrators; used to convert rotary motion into reciprocating push‑pull motion, with applications in excavator hydraulic systems, stamping die drives, pump bodies, compressors, and custom‑made automated equipment.
Product Details
Machining Capabilities
Integrated services covering CNC machining, turning, milling, grinding, drilling, sawing, cutting, leveling, welding, and assembly.
Processed products
Large plates, flanges, shafts, welded frames, bases, hardware components, aluminum parts, and tooling fixtures.
Processable materials
Carbon steel, alloy steel, stainless steel, aluminum, copper, POM, ABS, acrylic…
Surface treatment
Galvanizing/phosphating/chromating, blackening, anodizing, wire drawing, sandblasting, baking varnish, spray painting, electrophoretic coating, nitriding…
Drawing Requirements
PDF/CAD/3D
Samples Available
Yes
Sample Lead Time
7–15 days
Machining accuracy
±0.01 to ±0.05 mm
Roughness
Ra 0.8~3.2
Inspection
Incoming material inspection → First-piece inspection → In-process inspection → Pre-shipment inspection
Packaging
Carton/Pallet/Wooden crate
Certificate
ISO9001:2015
Lead Time
1–6 weeks
Supply model
Supports single-item prototyping, small-batch trial production, and large-scale mass production.
Delivery Service
We offer machining with customer-supplied materials or with materials supplied by us, along with 3D modeling and process optimization.
After-sales service
Shipping includes a dimensional inspection report (if required); rapid response and corrective action for quality issues.
Logistics
We can arrange dedicated vehicle delivery for oversized items and provide reinforced protection with wooden crates.
Application areas
Lithium Extraction Equipment for Salt-Lake Brines
Lithium Battery Equipment for New Energy Applications
LCD Display Vision-Inspection and Burn-In Equipment
Hengan Paper Industry Packaging Machine Series
3D polishing equipment
Specializing in the custom manufacturing and supply of components for automated non-standard equipment.
Keywords:
Precision CNC-Machined Eccentric Crankshafts / Eccentric Shafts
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No. 74, Zhennan 2nd Road, Xike, Tong'an District, Xiamen, Fujian, China
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