Custom 440C Medical Piston Carrier Shaft

Custom 440C Medical Piston Carrier Shaft

JG manufactures the Custom 440C Medical Piston Carrier Shaft for medical equipment and precision piston mechanisms. This slender fork-ended component combines hardened bearing diameters, tight geometric tolerances and a delicate two-tab connection feature. Manufacturing control after heat treatment is essential because the finished shaft must provide accurate motion while remaining clean, burr-free and free from cosmetic or structural damage.

Product Overview

The Custom 440C Medical Piston Carrier Shaft is produced to drawing 121755 Revision A from AISI 440C stainless steel. The component has an overall length of 3.545 inches, a long precision-ground body, stepped end diameters and a forked end with a controlled cross hole. The drawing requires final dimensions and finishes to be achieved after heat treatment.

Manufacturing Process

1. 440C stainless steel material verification and traceability
2. CNC turning of the shaft body, shoulders and grinding allowance
3. Precision milling of the fork slot and two end tabs
4. Cross-hole drilling and controlled edge preparation
5. Heat treatment to 53-58 HRC
6. Post-heat-treatment straightness and dimensional verification
7. Precision cylindrical and shoulder grinding to final size
8. Deburring, part marking, cleaning and visual inspection
9. Final dimensional inspection and protective medical-component packaging

Post-Heat-Treatment Grinding and Dimensional Stability

The main manufacturing challenge of the Custom 440C Medical Piston Carrier Shaft is maintaining straightness, diameter accuracy and datum relationships after hardening. The reference process calls for an approximately 0.645-inch blank, heat treatment and grinding to final dimensions. Controlled heat treatment, appropriate grinding allowance, low-heat grinding parameters and intermediate inspection help prevent distortion and grinding burn.

Fork Tabs and Precision Cross-Hole Control

The fork end of the Custom 440C Medical Piston Carrier Shaft includes two thin tabs surrounding a central slot. The cross hole is specified at 0.198 +/-0.001 inch with geometric controls referenced to datum A. Accurate tab spacing, matched hole position and careful deburring support reliable pin assembly. Dedicated packaging protects the two tabs from impact or bending during shipment.

Technical Specifications

Geometric and Surface Quality Control

The Custom 440C Medical Piston Carrier Shaft includes perpendicularity, parallelism, flatness and datum-referenced geometric controls down to 0.001-0.005 inch. Ground surfaces and fork features are inspected using appropriate precision equipment. All sharp corners are broken and no loose or hanging burrs or stringers are permitted.

Cleanliness and Visual Requirements

All surfaces must be clean and free from stains, discoloration, scratches, dents, cracks, blemishes, dirt, grease and other contaminants. Identification is etched in the drawing-specified zone with controlled roughness. The finished Custom 440C Medical Piston Carrier Shaft is handled and packed to protect precision-ground diameters, cross holes and fork tabs.

Quality Documents

• Material certificate and heat traceability
• Heat-treatment and hardness report
• Dimensional inspection report with every shipment
• Certificate of Compliance identifying part number and revision
• RoHS compliance certificate for the specified material when required
• First-article inspection documentation when requested

Product Features

• Premium AISI 440C stainless steel
• Heat treated to 53-58 HRC
• Precision ground after heat treatment
• Tight ground diameters and geometric tolerances
• Accurate fork slot and cross-hole relationship
• Burr-free, clean medical-component finish
• Protected packaging for delicate fork tabs
• OEM production according to customer drawings

Applications

• Medical piston mechanisms
• Diagnostic and analytical equipment
• Medical fluid-control assemblies
• Precision medical motion systems
• Custom OEM medical machinery

OEM Medical Precision Machining from JG

JG supplies the Custom 440C Medical Piston Carrier Shaft from prototype quantities through repeat production. Our integrated process covers CNC turning, fork machining, hardening, precision grinding, dimensional inspection, cleanliness control and protective packaging. Material, heat-treatment, compliance and inspection documentation support customer quality and traceability requirements.