A grade is easy to print on a quotation, far harder to hold at a small diameter. Working with a 440C stainless steel balls supplier starts with one question: can the line deliver a consistent 1.0mm ball, lot after lot? This reference walks through the 1.0mm 440C G10 ball, explains what a G10 claim actually changes on a running surface, and shows what a G10 stainless steel balls factory states about its own range, packaging and lead time so you can judge the offer before you place an order.
Those four figures decide most first-round supplier conversations: the grade you ask for has to exist at your diameter, and the certificate and hardness claim have to match the lot you receive.
The listing describes a ground, hardened stainless ball sized for work where a small diameter still has to carry a tight grade. The 440C alloy supplies wear resistance and corrosion protection, while the hardened core resists deformation and surface damage under repeated contact.
The page ties G10 tolerance grading to seamless incorporation into tight-tolerance bearing assemblies and valve mechanisms, and positions the ball for high-precision bearing work across automotive, robotics and aerospace, plus specialty pump and valve systems in chemical processing and medical devices. It is a component you specify, not a consumable you swap in by feel.
| Material | 440C stainless steel |
|---|---|
| Grade | G10 |
| Diameter / model | 1.0mm / 1.0MM |
| Hardness | HRC 58-62 |
| Surface | Grinding |
| Function stated | Corrosion resistant / wear resistant |
| Certification | ISO, RoHS |
| Brand / origin | Condar / Shandong, China |
| Industries listed | Repair shop, hardware accessories |
G10 is not a material property. It is a diameter tolerance band: the grade number rises as the allowable variation in ball diameter widens. On a running surface that number translates directly into how much preload or clearance you can predict before assembly.
| Grade | Band vs G10 | What it changes on a running surface | Supply position |
|---|---|---|---|
| G10 | Tightest band in the offered range | Smallest spread from ball to ball, so running clearance stays predictable in a small assembly | The grade of this 1.0mm listing |
| G16 | One step wider | More diameter variation between balls; workable where clearance is set after assembly | Inside the stated custom range |
| G25 | Wider again | Grade drift shows up as noise and uneven load sharing | Inside the stated custom range |
| G100 | Considerably wider | Suits general mechanical duty where precision is not the cost driver | Inside the stated custom range |
| G1000 | Widest band in the range | Only appropriate where a generous clearance is acceptable | Inside the stated custom range |
That is why a G10 claim is really a process claim. It says something about grinding control, sorting and batch discipline rather than about the steel itself, and it is the part of an offer most worth testing with a physical sample before a purchase order is written.
Each application below pairs one stated product fact with the decision it forces in a quotation review.
Product factG10 grading is described as enabling seamless incorporation into tight-tolerance bearing assemblies.
Buyer decisionPin the grade on the purchase order and check a sample lot for diameter spread across balls, not just a single measurement.
Product factThe page lists valve mechanisms and specialty pump and valve systems among the intended uses, with corrosion resistance stated as a function.
Buyer decisionConfirm seat geometry and the media your valve sees, then ask whether a different grade is required if the ball is lapped or reworked after delivery.
Product factISO and RoHS certification are stated for the product, with clean-room-adjacent packing available as a plastic bag and colour box route.
Buyer decisionRequest the RoHS documentation against your own part number and specify the packaging format in the order, not after it ships.
Product factRepair shop and hardware accessories are the listed industries, and the sales unit is a multiple of 10,000 pieces.
Buyer decisionPlan binning and storage around a 10,000-piece unit before ordering, because the minimum buy is a stock decision as much as a spend decision.
A 1.0mm ball is a light, high-count product, so packing and freight volume usually move the landed cost more than the piece price does. The listing sets out three packing routes and a fixed delivery window, which makes the quote comparable line by line.
A pack that light is billed on volumetric weight rather than actual weight, so ask your forwarder to rate the carton dimensions before you approve a freight line.
These are the points that separate a grade claim from a grade you can audit. Use them with any supplier, this one included.
A price is only comparable once the specification is fixed. Send these fields and the reply can be checked against your drawing instead of interpreted.
The listing shows a price of $53.00 with no stated currency. Confirm the currency and whether that figure applies per piece, per batch or per the 10,000-piece sales unit before comparing it with another offer.
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View productReview the product details, images, and specifications presented on the official product page.
Use the application and use-case information published on the official product page.
Confirm the specifications and options listed for the exact product variant before placing an order.
Check the official product page or ask the supplier about options shown for the selected product.
Use the official contact or inquiry path provided on the site.
Include the product page, intended use, required quantity, and any specifications you need the supplier to review.