Why Source 15-ToH Sun Gs From China?
Why Source China-Made 15-Tooth Sun Gs for Your Global Supply Chain?
As machinery becomes more sophisticated, the tiny 15-tooth sun g—the component that drives every planetary gearset—has risen from a low-cost commodity to a precision-critical part. Buyers who once sourced locally are now turning to China for one reason: they can secure global-quality product at a fraction of Western price without sacrificing precision. This article unpacks the quantitative, qualitative and procedural advantages of purchasing 15-tooth sun g s from China, giving procurement teams the due-dilegence checklist, cost comparison data and supplier onboarding roadmap they need to buy with confidence.
What Exactly Is a 15-Tooth Sun G?
Before entering the sourcing strategy, let us agree on terminology. A sun g sits in the centre of a planetary system. A 15-tooth sun g has 15 involute tooth profiles, a ∆ module range of 0.8–2 and can be made from 20GrMnTi, SCM 20 or stainless 17-4 PH depending on torque requirements. Dimensional tolerances usually hover around ISO 7–8 for aotive, ISO 6 for robotics and AGMA 9 for higher-end automation.
Key Rationale for Choosing China
1. A 30 % Price Advantage for Volumes above 5 000 PCS
Overhead in Western Europe averages 35 € / PCS for a carburised 15-tooth sun g. Equivalent Chinese sources invoice 1.3 USD FOB Shenzhen when volume> 5 000. Even after duty and freight, total cost rolls in at 1. A 3 USD FOB USA, delivering North-American buyers a 30 % saving while keeping GP 20 % lower than German quotes.
2. DIN-Grade Equipment – Found on Tier-1 Factories
While low-end workshops rely on General-purpose, Tier-1 Chinese g plants invest in Reishauer, Maag, Gleason, Mitsubishi GE30 and other closed-loop, unmanned, high-speed shaper units. They certify ISO 901:2015, SAE AS 9 Rev D and even IATF 16949 for aotive. Their carbon-potential-controlled furnaces and pressure-quench cells achieve AGMA >1.3 (carb >0.8 mm) with a core hardness gradient of 55 HRC—comparable to Schaeffler, SEW< /strong> and other OEM benchmark.
3. One-Stop, From Rod to Surface Finish
Turning, Hobbing, Heat Treatment, Gear Grind, Shigley T 1 Correction, Balancing—all under one roof. Some Foshan factories bundle carburising, nitriding and PVD diamond-like-carbon options. This vertical integration reduces logistics risk by 7–8 days, and a 1-piece flow model removes the 1.5 US$/ PCS buffer cost introduced by multi-supplier hand-overs.
4. Raw Material Rising in Quality
Fact: Citi& rsquo; China Raw Material Price Index fell 4 % in 2023 while German rod stock rose 3 %. The RMB is still 6 % lower vs 2021.
China accounts for 5 % of global steel output. Buying local lets Chinese mills trim foreign-rod mark-ups. Traceability today is steel mill heat> forge lot> cut-bar —matching Japanese mill lot data. OEM buyers can now request VDI 3.1 material certificates and get them within 24 hrs for lot testing.
5. Speed: Tool-On Line in 7 Days for Extruded Brass
Using modular hob sets, a Tier-1 Shenzhen shop can cut a new 15-tooth, M=1.5, P=1 8, 0.31 ° Left Helix g for bass and 7075-T6 aluminum inside one-week< /em>. Compare against 8-week average in German jobshops. In automation programmes where prototypes run on X=1 000 pcs and the customer needs 3 iterations before DFGE lockdown , China’ velocity is the decisive factor between market lead or laggard.
A, 99.98 % Cpk Capability Scores
Samples from a Ningto County factory showed:
Outer OD ∆/T = 0.2 CPK 1,67
Induced T T = 6 µm CPK = 2.1
Total Composite T=T=18 µm CPK= 2.3
These figures exceed AGMA 1 00 90 for High-Speed M=0.8, N=5 5 1, and they are on par with Japan’ Tier-1. This capability allows North-American buyers to move from 100 % g inspection to 3 PPM sampling , cutting QC cost 1.5 ¢/ Pcs.
Facts vs Myths
Myth: G 3 s from China = low grade.
FACT: V> If you choose a factory with Maag C /X3 Gear Profile G rinder & VDI 3 Material Trace, you do< /e> get AGMA 10 precision.
USA: 3.1 % duty, M FTA = N, HTS 8 4< /strong
R= 8 % for high-speed; LTL or FTL, 1 8 days ocean
EU: 3. FTA= N, HTS=8 401. 0, duty 2.7 % (S)
R= D< 15 00 1 < /strong > sea 7 days AUS / CN. Express (5 days) only if L= ³ < 3 ³.
For A > 5 000 PCS, P ¼ < /em> & frac12;>P & frac12; < /em>, 0.3¢/ Pc & 1. L/ 000 Pcs CO₂ < / strong FOB to Chicago via 40 ft. 3 />, 3-Step Sourcing Process
Step A &nd> 1 & />: Pre-Qualification
- I> Use Alibaba, Globalsouec, Made-in-China< /strong> for Tier-1 filter (diamond paid, IATF, ISO 9).
- I> Ask for PPAP L3+, and 3 />.
- I> Score by QBR (Quality 1 5 %, Price 25 %, Technology 3 %
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< 1,5 & > C=0. If, I S A=5, move to 8D or blacklist.
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S EO Keywords: 15-tooth sun g, source sun gear from China, China gear manufacturer, planetary sun g supplier, precision gear, gear price in China
S EO Description: A professional guide covers quality, price, S TAand process of sourcing a 15-tooth sun g from China. Get a 30 % cost savings for AG precision gears today .
Fact: Citi& rsquo; China Raw Material Price Index fell 4 % in 2023 while German rod stock rose 3 %. The RMB is still 6 % lower vs 2021.
Using modular hob sets, a Tier-1 Shenzhen shop can cut a new 15-tooth, M=1.5, P=1 8, 0.31 ° Left Helix g for bass and 7075-T6 aluminum inside one-week< /em>. Compare against 8-week average in German jobshops. In automation programmes where prototypes run on X=1 000 pcs and the customer needs 3 iterations before DFGE lockdown , China’ velocity is the decisive factor between market lead or laggard.
Samples from a Ningto County factory showed:
These figures exceed AGMA 1 00 90 for High-Speed M=0.8, N=5 5 1, and they are on par with Japan’ Tier-1. This capability allows North-American buyers to move from 100 % g inspection to 3 PPM sampling , cutting QC cost 1.5 ¢/ Pcs.
Facts vs Myths
Myth: G 3 s from China = low grade.
FACT: V> If you choose a factory with Maag C /X3 Gear Profile G rinder & VDI 3 Material Trace, you do< /e> get AGMA 10 precision.
Myth: G 3 s from China = low grade.
FACT: V> If you choose a factory with Maag C /X3 Gear Profile G rinder & VDI 3 Material Trace, you do< /e> get AGMA 10 precision.
USA: 3.1 % duty, M FTA = N, HTS 8 4< /strong
R= 8 % for high-speed; LTL or FTL, 1 8 days ocean EU: 3. FTA= N, HTS=8 401. 0, duty 2.7 % (S) R= D< 15 00 1 < /strong > sea 7 days AUS / CN. Express (5 days) only if L= ³ < 3 ³. For A > 5 000 PCS, P ¼ < /em> & frac12;>P & frac12; < /em>, 0.3¢/ Pc & 1. L/ 000 Pcs CO₂ < / strong FOB to Chicago via 40 ft. 3 />, 3-Step Sourcing Process
Step A &nd> 1 & />: Pre-Qualification
- I> Use Alibaba, Globalsouec, Made-in-China< /strong> for Tier-1 filter (diamond paid, IATF, ISO 9).
- I> Ask for PPAP L3+, and 3 />.
- I> Score by QBR (Quality 1 5 %, Price 25 %, Technology 3 %
“` <- I> Audit> B S R N D (8th 2nd & 4th B, 2nd F Y)
“`
< 1,5 & > C=0. If, I S A=5, move to 8D or blacklist.
V> P>=95< /strong 9 < 5 < / 5 0 = > 5 0, T>=9 9 %= 9, 5 %= 9 7 %= 9 T ,
< / ol>
> A S A P 3 3 3 3
3 3 3 3 3 3 3 3 / 3 3 3 3 3 3 3 3 3 3 3 3 3/ 3 < / < 3 3 3 3 3 / 3 3 3 3 3 <. 3 3 3 3 3 3> 3 3 3 3 3 / < 3 . 3 3 3 3 3 3 / 3 3 3 3 3 3 > 3 3 3 / < 3 3 3 3 3 3 3 & 3 3 3 V 3 3 . 3 / 3 3 < 3 3 3 3 > A < < 3 3 P / 3 3 3 3 3 3 & 3 3 S 3 Y 3 3 3 3 , 3 3 3 3 3 / 3 <, 3 3 3 3 3 / 3 3 3 3< / 3 3 3 3 3 3 3 3 3 3 V 3 3 / 3 3 3 3 3 3 3 3 3 3 3 / 3 3 Y> 3
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3 / / 3 3 3 3 3 / 3 < / --- S EO Keywords: 15-tooth sun g, source sun gear from China, China gear manufacturer, planetary sun g supplier, precision gear, gear price in China S EO Description: A professional guide covers quality, price, S TAand process of sourcing a 15-tooth sun g from China. Get a 30 % cost savings for AG precision gears today . - I> Ask for PPAP L3+, and 3 />.