unscrewing mold parts manufacturer, rack and pinion demolding, China mold factory, thread unscrewing components
Mold Parts Manufacturer
Expert in-house machining · strict process control · ±0.001mm tolerance — delivering stability for every plastic mold application.
Strong Factory, Welcome for Factory Inspection.
8000+㎡
Factory Area
100+people
Technician
200+devices
Advanced equipmentc
Our Advantages
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Technical Capabilities
Boasts a strong R&D team,consistently committed to independent R&D and technological innovation Providesprofessi onal industry solutions.
Machining Capability
24/7 shift operation. Standard partsdelivered within 7 days; small batchescompleted in as fast as 15 days. Monthlycapacity reaches 300,000 pieces.
Quality Control
IQC controls incoming materials, IPQC is responsible for the production process, FQC ensures smooth delivery through final inspection, and the quality pass rate is as high as 98.9%.
Service Capability
Customer service team is available 24/7 Quotations can be provided within 2hours;, after-sales matters are handledwithin oneday.Customer satisfaction rate reaches 97%.
Product Description
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Machining type:CNC Turning
Processing form:Processing with supplied drawings
Tolerance:±0.001mm
Maximum diameter:300mm
Assembling service:Provide
Sample delivery:7-10 days
Annual maximum processing capacity:7000000 pieces
Brand:Chuanchen
Machining accuracy:Fine finishing
Processing materials:S136/420 ESR/1.2083
Surface roughness:Ra0.05
Maximum length:800mm
Surface Treatment:Hard Chrome + Mirror Polishing Composite
Production delivery:8-15 days
Factory address:No. 9, Southwest Lang 2nd Road, Chang'an Town, Dongguan City, Guangdong Province, China
Quotation Instructions：
1.Need to provide 2D and 3D drawings.2D format:dwg/dxf/pdf,3D format:prt/igs/stp/step/x_t/sldprt.2.Need to be informed of the material name.3.Need to be informed of the quantity.4.Need to be informed of heat treatment and surface treatment requirements.5.Need to inform the delivery time.6.Need to be informed of the shipping method.7.There are special requirements that need to be clearly marked on the drawings.
Machining Accuracy
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|
Tolerance marking |
Tolerance name |
Tolerance limit |
Tolerance marking |
Tolerance name |
Tolerance limit |
|---|---|---|---|---|---|
|
|
Straightness |
0.002mm |
|
Parallelism |
0.002mm |
|
|
Flatness |
0.002mm |
|
Perpendicularity |
0.003mm |
|
|
Circularity |
0.001mm |
|
Angularity |
0.005mm |
|
|
Cylindricity |
0.002mm |
|
Concentricity |
0.003mm |
|
|
Profile of a line |
0.005mm |
|
Symmetry |
0.005mm |
|
|
Profile of a surface |
0.005mm |
|
Position |
0.005mm |
|
|
Circular runout |
0.002mm |
|
Total runout |
0.002mm |
|
/ |
Aperture accuracy |
0.002mm |
/ |
Hole depth accuracy |
0.05mm |
|
/ |
Slot width |
0.02mm |
/ |
Internal thread |
M2 |
|
/ |
Roughness |
Ra0.05 |
/ |
Clearance fit |
0.002mm |
Product Display
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Product Packaging
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Customization Process
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Company Profile
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Common Materials
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|
Common Trade Name |
JIS (Japan) |
AISI/SAE (USA) |
DIN (Germany) |
GB (China) |
|---|---|---|---|---|
|
H13 (Standard) |
SKD61 |
H13 |
1.2344 |
4Cr5MoSiV1 |
|
D2 |
SKD11 |
D2 |
1.2379 |
Cr12Mo1V1 |
|
DC53 (Daido) |
DC53 |
— |
— |
— |
|
Cr12MoV |
— |
D3 Mod. |
1.2601 |
Cr12MoV |
|
M2 |
SKH51 / SKH9 |
M2 |
1.3343 |
W6Mo5Cr4V2 |
|
P20 |
P20 |
P20 |
1.2330 |
3Cr2Mo |
|
718 |
718 |
P20+Ni |
1.2738 |
3Cr2NiMo |
|
NAK80 (Daido) |
NAK80 |
— |
— |
— |
|
S136H |
S136H |
420H |
1.2083 Pre-hardened |
4Cr13 Pre-hardened |
|
S136 (420 ESR) |
S136 |
420 ESR |
1.2083 |
4Cr13 |
|
440C |
440C |
440C |
1.4125 |
9Cr18Mo |
|
C45 / 1045 |
S45C |
1045 |
1.0503 / C45 |
45# |
|
BeCu C17200 |
C1720 |
C17200 |
— |
QBe2 |
|
C28000 |
C2800 |
C28000 |
— |
H62 |
Surface Treatment
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|
No. |
Surface Treatment Process |
Key Benefits |
Applicable Mold Components |
|---|---|---|---|
|
1 |
Through Hardening + Low Temperature Tempering |
Comprehensively improves hardness, strength and wear resistance of the full part, ensures overall structural rigidity |
Cavity & core inserts, slides, lifters, punches, precision core pins |
|
2 |
Gas Nitriding / Plasma (Ion) Nitriding |
Forms a nitride hardened layer on the surface, greatly improves wear resistance, anti-galling and corrosion resistance with minimal distortion |
Ejector pins, sleeve ejectors, flat ejectors, core pins, guide bushes, slides, cavity/core molding surfaces |
|
3 |
Hard Chrome Plating |
Significantly improves surface hardness, wear resistance, rust prevention and surface finish; restores dimensions of worn parts |
Cavities, cores, guide pins, ejector pins, sleeve ejectors, slides, parts with dimensional deviation after wear |
|
4 |
Electroless Nickel Plating (Ni-P Alloy) |
Exceptional coating uniformity; reliable wear and corrosion resistance; no edge build-up effect |
Complex-shaped inserts, mold base plates, screws, springs, locating blocks |
|
5 |
Ni-P-PTFE Composite Coating |
Combines hardness of nickel layer with self-lubricating property of PTFE; extremely low friction coefficient and excellent demolding performance |
Lifters, slides, deep-cavity inserts, ejector pins prone to plastic sticking |
|
6 |
Titanium Nitride Coating (TiN) |
High hardness, excellent wear and adhesion resistance; reduces demolding resistance |
Ejector pins, sleeve ejectors, core pins, slides, precision molding inserts |
|
7 |
Titanium Carbonitride Coating (TiCN) |
Higher hardness than TiN; superior wear and friction reduction performance |
High-speed ejector pins, sleeve ejectors, lifters, high-life precision mold components |
|
8 |
Chromium Nitride Coating (CrN) |
Strong corrosion resistance, anti-adhesion, good demolding performance and high toughness |
Cavities, inserts and ejector pins for molds processing corrosive plastics (PVC, POM, flame-retardant ABS) |
|
9 |
Diamond-Like Carbon Coating (DLC) |
Extremely low friction coefficient, self-lubricating, outstanding demolding performance and high wear resistance |
Precision complex cavities, micro core pins, ejector pins, lifters, optical lens molds |
|
10 |
Passivation Treatment |
Improves corrosion resistance of stainless steel components; removes free iron from the surface |
Cavities, inserts, ejector pins made of stainless steels such as S136, 420 |
|
11 |
Mold Polishing (Sandpaper + Oil Stone + Diamond Paste) |
Reduces surface roughness, improves finish, enhances demolding performance and product appearance |
Molding surfaces of cavities, cores, inserts and slides |
|
12 |
Mirror Polishing (Super Precision Polishing) |
Achieves optical-grade mirror effect for flawless product surface |
Molding surfaces of optical lenses, transparent housings, high-gloss acrylic molds |
|
13 |
Texturing / Etching (Chemical Etching / Laser Texturing) |
Creates surface textures such as leather grain, matte finish and brushed effect on product appearance |
Cavities, cores, molding surfaces of appearance parts |
|
14 |
TD Coating (Thermal Diffusion Carbide Coating) |
Forms vanadium/niobium carbide layer on the surface; ultra-high hardness, exceptional wear and galling resistance |
Deep drawing inserts, high-wear slides, long-life ejector pins and sleeve ejectors |
|
15 |
Hard Chrome + Mirror Polishing Composite |
Combines high hardness, high-gloss mirror finish and long-term rust protection |
Cavities of high-gloss transparent parts, mirror-finish mold cores |
Production Equipment
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CNC Machining Center
Origin: China Machining accuracy: 0.005mm
5-Axis CNC Machining
Brand: Makino Machining accuracy: 0.003mm
CNC Lathe
Brand: Hardinge Machining accuracy:0.002mm
Turn-Mill Machining
Brand: Mazak Machining accuracy: 0.003mm
EDM
Brand: Sodick Machining accuracy: 0.003mm
WEDM
Brand: Sodick Machining accuracy:0.002mm
Centerless Grinding
Origin: China Machining accuracy: 0.001mm
Surface Grinding
Origin: China Machining accuracy: 0.002mm
Punch Grinding
Origin: China Machining accuracy:0.003mm
External Grinding
Origin: China Machining accuracy: 0.002mm
CNC ID & OD Grinding
Origin: China Machining accuracy: 0.001mm
Swiss Lathe(Automated Machine Tools)
Brand: Citizen Machining accuracy:0.003mm
Coordinate Measuring Machine
Brand: Hexagon Measurement accuracy: 0.002mm
Coordinate Measuring Machine
Brand: Zeiss Measurement accuracy: 0.001mm
Coordinate Measuring Machine
Origin: China Measurement accuracy: 0.002mm
Roundness Tester
Brand: Mitutoyo Measurement accuracy: 0.001mm
Optical Comparator
Origin: China Measurement accuracy: 0.003mm
Vision Measuring Machine
Origin: China Measurement accuracy: 0.003mm
Automated Vision Measuring Machine
Origin: America Measurement accuracy: 0.002mm
Height Gauges
Origin: Switzerland Measurement accuracy: 0.002mm
Surface Roughness Testers
Brand: Mitutoyo Measurement accuracy: 0.0125μm
Product Range
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Spray Pump Mold Components
Cosmetic Mold Components
Pharmaceutical Packaging Mold Components
Reaction Cup Mold Components
Petri Dish Mold Components
Pipette Tip Mold Components
Eyebrow Razor Mold Cores
Pump Head Mold Cores
Syringe Mold Components
Pen Mold Components
Die‑casting Mold Components
Hot‑runner Mold Components
Collapsible Core
Lead‑screws
Gears & Racks
Certificate
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ISO 9001
CE
RoHS
FAQ
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Q: Are you a trading company or a manufacturer?
We are manufacturers.With over 15 years of processing experience, we welcome factory inspections.
Q: What is your delivery time?
15-20 days, depending on the order quantity and product process.
Q: What is the mode of transportation?
Most of the goods are shipped by international air express companies such as DHL, UPS, FedEx, TNT. Usually takes about 3-5 working days (door-to-door service). We can also arrange sea freight.
Q. What are your payment terms?
Regularly make 30%, 50% deposits, and 50%, 70% balances through T/T, Western Union, and PayPal. Other payment terms can also be discussed based on our cooperation.
Q: I want to keep our design confidential. Can we sign an NDA?
Of course, we will not showcase any of our clients’ designs or displays to others, and we can sign an NDA.
Q: I have never been to China before. Can you be my guide in China?
We are happy to provide you with one-stop services, such as booking flights, airport pick-up, hotel reservations, accompanying visits to markets or factories.
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