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SS440C Precision Core Pin Insert for Medical Pipette Tip Molds
High Tolerance ±0.005mm, Mirror Polish Finish, Custom Injection Mold Components
Product Overview
High-Precision SS440C Core Pins for Medical Pipette Tip Injection Molds
Engineered for medical-grade plastic injection molding, our SS440C core pin inserts deliver ultra-tight tolerances and superior surface finish required for pipette tip production. Each pin is precision-ground and polished to meet strict dimensional accuracy demanded by medical and laboratory consumables manufacturing.
Key Features
Material: SS440C stainless steel - excellent corrosion resistance, high hardness, and wear resistance for long production runs
Precision Tolerance: ±0.005mm ensures consistent wall thickness and dimensional accuracy
Surface Finish: Mirror polish (SPI-A1 or customizable) to reduce friction and prevent flash
Hardness: Heat-treated to HRC 50-56 (customizable) for extended mold life
Application: Designed specifically for medical pipette tips and micro-fluidic components
Custom Specifications: Length, diameter, taper angle, and finish manufactured to exact requirements
Product Specifications
Item
Details
Material
SKD61 (equivalent to H13 / 1.2344 / 4Cr5MoSiV1)
Hardness
Full Hard, HRC 58-62 (customizable)
Surface Treatment
Nitrided (optional)
Head Type
JIS Standard / DIN Standard / Customized
Diameter Range
1mm - 50mm (customizable)
Length Range
50mm - 500mm (customizable)
Tolerance
±0.01mm (precision ground)
Concentricity
0.02-0.06mm available
Surface Finish
Polished / Ra 0.2-0.4
Type
Straight Ejector Pin, Ejector Sleeve, Stepped Pin
Advanced Features
High precision grinding ensures smooth ejection and reduces mold wear
Full hard treatment for excellent durability and resistance to deformation
Nitrided surface option for enhanced wear resistance and reduced friction
Manufactured to JIS, DIN, or customer-specific standards
Consistent quality control with strict dimensional inspection
Applications
Suitable for injection molds, die casting molds, stamping dies, and precision tooling across industries including automotive parts, home appliances, electronics housings, industrial components, medical pipette tips, laboratory consumables, micro-precision plastic components, and diagnostic device parts.
Customization & OEM Support
We accept customized orders based on drawings or samples, including custom diameter, length, head type, hardness, and surface treatment. OEM and ODM services available with small trial orders welcome before bulk production.
Quality Assurance & Manufacturing
Why Choose Our Core Pins
CNC precision machining + manual polishing for consistent quality
Suitable for high-cavity, high-volume medical mold production
Strict QC inspection with dimensional reports available
OEM/ODM support - manufacture to specifications or reverse-engineer from samples
Customization & MOQ
We accept custom orders based on your technical drawings (CAD/2D/3D) or physical samples. Contact us for MOQ, lead time, and pricing based on your specifications.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2013
Total Annual:
5000000USD-60000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Elite Mould, located in Dongguan, Guangdong Province—China’s precision manufacturing hub, delivers premium-quality molds and one-stop manufacturing solutions to clients across China and global markets.
Founded in 2013, we are led by a professional management team with deep technical exp... Elite Mould, located in Dongguan, Guangdong Province—China’s precision manufacturing hub, delivers premium-quality molds and one-stop manufacturing solutions to clients across China and global markets.
Founded in 2013, we are led by a professional management team with deep technical exp...
