Data parameters
Grades (AFBMA) / Tolerances for Steel Balls
Grade (AFBMA) | Ball Diameter Tolerance (Ovality Per Ball) | Basic Diameter Tolerance (Ball To Ball Variation) |
Inches | Millimeters | Microns | Inches | Millimeters | Microns |
20 | 0.000020 | 0.0005 | 0.50 | +/- 0.0001 | +/- 0.0025 | +/- 2.50 |
25 | 0.000025 | 0.0006 | 0.60 | +/- 0.0001 | +/- 0.0025 | +/- 2.50 |
100 | 0.0001 | 0.0025 | 2.50 | +/- 0.0005 | +/- 0.0127 | +/- 12.70 |
200 | 0.0002 | 0.0051 | 5.10 | +/- 0.001 | +/- 0.0254 | +/- 25.40 |
500 | 0.0005 | 0.0127 | 12.70 | +/- 0.002 | +/- 0.0508 | +/- 50.80 |
1000 | 0.001 | 0.0254 | 25.40 | +/- 0.005 | +/- 0.1270 | +/- 127 |
2000 | 0.002 | 0.0508 | 50.80 | +/- 0.005 | +/- 0.1270 | +/- 127 |
Basic information
AISI Number | AISI1008~AISI1018,AISI1045,AISI1065~AISI1086 |
Size | 1.0mm----80mm |
Grade | G5----G1000 |
Chemical Composition
Item | C% | Si% | Mn% | P% | S% | Density | Hardness |
AISI 1010 | 0.08~0.13 | 0.30Max | 0.50Max | 0.07Max | 0.06Max | 7.861g/cm3 | HRC 55-63 |
AISI 1015 | 0.13~0.18 | 0.10~0.30 | 0.30~0.60 | 0.04Max | ********* |
AISI 1045 | 0.43~0.50 | 0.10~0.30 | 0.60~0.90 | 0.04Max | 0.05Max |
AISI 1086 | 0.83~0.88 | 0.10~0.30 | 0.30~0.70 | 0.04Max | 0.04Max |
Item | Name | Material |
1 | Stainless Steel Ball | AISI304/304L/316/316L/420/420C/440C |
2 | Chrome Steel Ball | AISI 52100/ 100Cr6/ Gcr15/ SUJ2 |
3 | Carbon Steel Ball | AISI1010/1015/1086 |
Production sequence of steel balls
Wire Coil: Steel wire of specific material and size is checked for correctness.
Cutting: The wire is cut into required lengths.
Forging / Heading: Spherical shapes between dies are formed.
Deflashing: The flash line along the circumference is removed.
Heat Treatment: Chrome and bearing steel balls are thorough hardened.
Cleaning / Descaling: Basic surface cleaning is done.
Hard Grinding / Filing: An exacting process to achieve required sphericity and size of the steel ball.
Lapping: The final surface finish is acquired through this process.
Polishing / Burnishing: Surface lustre, work hardening, higher product life is achieved.
Passivation: Carryover iron and other contaminants are removed and a surface film prevents atmospheric and water corrosion on stainless steel balls.
Inspection: For surface finish, size and tolerance.
Rust preventive oil: Applied on chrome alloy steel balls to save from rusting and corrosion.
Packing: Done as per requirement in numbers, pieces or by weight. VCI paper or bags are used wherever necessary.
Advantages of Our Product
The best steel, pre-tested, is used with modern production, inspection procedures.
Proprietary polishing, lapping processes employed, result in world class finishes.
Strict quality control and inspection at each stage ensures that each steel ball which
finally rolls out, conforms to the required quality and specification.
The steel ball are offered in a wide range
Of material compositions in chrome, bearing, inox and stainless steel;
In sizes ranging from 1 mm to 12.7 mm and 3/64" to 1/2" diameters;
And Grade 100 to 2000, which basically denotes the tolerance and surface finish.
FAQ
Q1:What kind of steel balls can supply ?
A1:
Material | Carbon, Chrome, Stainless |
Size range | 0.8mm-150mm |
Grade | G10-1000 |
Packing | Standard or as customer required |
Delivery | Stock within a short time or 35 days |
Q2. -- If 'I' want small quantity and fast delivery. Which way of shipping is advised ?
A2. -- By express.
Q3. -- How many quantity will be packed in one carton or one pallet ?
A3. -- 20 to 25kg per carton,1 ton per wooden pallet.
Q4. -- What's the lead time ?
A4. -- If in stocks,2-5days;or ,it will take 20-35days,depend on the quantity.
Q5. --Which kind of payment will be accepted ?
A5. -- T/T, L/C, ...
Q6.--Are you Factory or Trading company?
A6.--We are a trading and manufacturing factory of steel ball.
Q7. --What is your MOQ?
A7. --Our MOQ is 1000kgs.
Q8.--How can I get a sample to check your quality?
A8.-- If you need the samples, we will charge for the sample cost But the sample cost can be refundable after order confirmation when your quantity of the order is more
Q9.--How long does it usually take to deliver the products?
A9.--20-30days after received the deposit.Honestly,it depends on the order quantity and the season you place the order.The lead time of MOQ is about 25 to 30 days.
Generally speaking,we suggest that you start inquiry two months before the date you would like to get the products at your country.
Q10. --What is the kind of terms of payment?
A10. --We accept FOB,CIF,CFR,etc.You can choose the one which is the most convenient or cost effective for you.
Q11.--Can you do Customization & Reproduction if I provide a photo?
A11. --Yes, we do Customization & Reproduction service.
Welcome to contact us!