Shandong Dihui Machinery Technology has the complete mature ceramic ball production technology and the whole ceramic balls production line. The products have stable performance and good consistency. We can provide various sizes of ceramic balls according to customers' requirements, including both GPS and HIP sintering technology products.
Application:
Most ceramic balls are mounted in the bearing (high-speed bearing, high precision bearing, vacuum bearing, high/low-temperature bearing, nonmagnetic bearing, high precision ball screws) for the high technology industry, such as aerospace and national defense and etc. The ceramic balls can also be used for chemistry, metallurgy, medical treatment, food industry, oilfield, electronic engineering and etc.
| Material | Properties | Class | ||||
| Class 1 | Class 2 | Class 3 | ||||
| Si3N4 | Density (g/cm³) | 3.0≤ρ≤3.6 | ||||
| Elastic modulus (Gpa) | 270≤E≤330 | |||||
| Poisson's ratio | 0.23≤μ≤0.29 | |||||
| Coefficient of thermal expansion, X10-6/ºC | 2.0≤α≤3.7 | |||||
| (applicable range: room temp. to 500ºC) | ||||||
| Average flexural strength (MPa) | 4-point test method | ≥750 | ≥650 | ≥530 | ||
| 3-point test method | ≥820 | ≥720 | ≥550 | |||
| Average Vickers hardness /Gpa | ≥14.2 | ≥13.3 | ≥12.7 | |||
| Average indentation fracture resistance(Mpa*m1/2) | ≥6 | ≥5 | ≥5 | |||
| Crushing load ratio (%) | 40 | 35 | 30 | |||
| Microstructure | Pore size/μm | ≤10 | ≤10 | ≤25 | ||
| Inclusion/(number/cm²) | 25<S≤50 | ≤4 | ≤8 | ≤16 | ||
| 50<S≤100 | ≤1 | ≤2 | ≤4 | |||
| 100<S≤200 | ≤0 | ≤1 | ≤2 | |||
| S>200 | 0 | 0 | ≤1 | |||
| Capacity | *Fine ceramics standard: GB/T 31703-2015,ISO 26602-2017,ASTM F2094 F2094M-2018a, | |||||
| *Range:1mm-50.8mm | ||||||
| *Grade: G3-G100 | ||||||
1. Founded in 1989, Shandong Dihui Machinery Technology Co., Ltd. is a large-scale rolling element manufacturer.
2. Advanced production and testing equipment. Including 98pcs cold forging machines, 46pcs vertical 4980 ball mills, 42pcs 4980 ball grinding machines, 56pcs 4780 lapping machines, 4pcs heat treatment equipment, 68pcs punching machines, etc.
3. Mainly produces stainless steel balls, high/medium/low carbon steel balls, bearing steel balls, ceramic balls, glass balls, roller, needles and etc., with over 55 billion annual output balls of various specifications.
4. ISO 3290-1-2014, GB/T308.1-2013, DIN 5401-2002 standard, We provide balls, rollers, needles, etc. of various specifications and materials, precision G5-G1000 and specifications of 0.5mm-120.0mm.
5. Widely used in the aerospace industry, automotive industry, precision instruments, meters, toys, motorcycles, bicycles, bearings, luggage, universal wheels, slide rails, medical equipment, and food machinery, and puncture decorations and etc.
1. Do you like to accept small orders?
We enjoy growing up together with all our clients, whatever big or small. You will become bigger and bigger to be with
us.
2. Will you send me a free sample?
Yeah, we'd love to; can you pay for the delivery?
3. Could you accept OEM and customization?
YES, we can customize for you according to sample or drawing.
4. Is it your company factory or Trade Company?
We have our own factory and you welcome to come and visit.
5. What certification do you have?
We have ISO 3290-1-2014, SGS, IATF16949 certifications.
6. Could you tell me the payment term for your company can accept?
We accept the TT, L/C, West Union, MoneyGram, and other ways. The customer can choose the way to deliver to you.
goods by sea or Air. We will do our best to serve our customers.
7. Could you tell me the delivery time of your goods?
3-7 days stock goods and other goods according to the quantity of about 3-21 days.