Steel Balls, Stainless Steel Balls, Ceramic Balls, Plastic Balls,
Glass Balls etc

Balls in all materials


SPEKUMA supply Balls in many different materials. See below for different materials:


Chrome Steel Balls: We stock primarily AISI 52100 = 100Cr6.
From 0,2 mm and both in mm and inch. 
Chrome Steel have good surface quality, high hardness and is able to operate under heavy load. This type of Balls are mainly used in Bearings and various industrial applications.
Carbon Steel:  We supply primarily AISI 1010/1015 or AISI 1085. Carbon Steel has case-hardened surface, can be used in applications that do not require the through hardened Ball. Applications as furniture wheels, locks and toys.

Read about Steel Balls here: RGP Balls

In some applications, the Balls must be resistant to water, steam, oil, gas and chemical liquids. There is hardened , unhardened and acid-resistant Balls of various sizes and depending on the material is resistant to some or all of these liquids. 
AISI 420: We stock primarily hardened rust resistant = AISI 420C
AISI 440
: hardened rust resistant, but less corrosion resistant than 420C
AISI 316:  We stock primarily unhardened Stainless Steel  = AISI 316/316L
AISI 304: 
unhardened Stainless Steel, softer and less corrision resistant than 316/316L

Read about Stainless Steel Balls here: RGP Balls AISI420-440

Read about Stainless Steel Balls here: RGP Balls AISI302-316



Cobalt incl Stellite
Nickel incl Hastelloy
Tungsteen Carbide 

Read about Metal Alloy Balls here: RGP Balls 

Ceramic Balls are extremely hard and can be used in temperatures up to approx 2000 º C. The material has high abrasion and corrosion resistance. The Balls are non-magnetic and have electrical insulating capacity. Used in Ball Bearings, measuring instrument, valves, pumps, airspacy industry etc.
Al2O3: Alumina oxide is resistant to most corrosive substances, but should not be used in conjunction with hydrochloric, hydrofluoric acid or other strong alkaline acids.Withstands temp -100 till 1600ºC. The colour is white.
Al2O3 Ruby: the typical red colour of ruby is due to small amounts of impurities.
Al2O3 Sapphire:  are transparent and provide high hardness
Si3N4: Silicon Nitride withstands temperatures up to 1200 ºC and has a grey-black colour.
SiC: Silicon Carbide has good mechanical and stiffness properties
ZrO2: Zirconium oxide withstand approx 1350 ºC and the colour is white.

Read about Ceramic Balls here: RGP Balls Ceramic


We supply Balls in different plastic materials and colours. Standard-colour is often natural white. 
POM: Polyacetal = Delrin
PA: Polyamide = Nylon 6 / Nylon 6.6
PP:  Polypropylene
PUR: Polyurethane
PTFE: Polytetrafluoroethylene = Teflon
PAI: Polyamide-imide = Torlon 4301
PEEK: Polyether ether keotone
PVDF: Polyvinylidene fluoride

Read about Plastic Balls here: RGP Balls Plastic


Soda-lime: should not be exposed to heat or mechanical shock.
Borosilicate:  is corrosion resistant , compatible with most acids and has good resistance to thermal shocks.
Black glass:  are used in technical instruments such as flow meters. 
Quartz SiO2: They are mainly used in optical devices and anti-reflective coatings.

Read about Glass Balls here: RGP Balls Glass


NBR: Nitrile Rubber
NR: Natural Rubber
PUR RUBBER: Polyurethane elastomer Rubber
EPDM:   Ethylene propylene diene monomer Rubber
SILICONE:  Elastomer = rubber-like material
VITON: Fluorocarbon Rubber

Read about Rubber Balls here: RGP Balls Rubber


We stock Hollow Stainless Steel Balls. These are usually used as decorations. See Campaign
Hollow Plastic Balls are often used as floating elements, they can help reduce evaporation of liquids and emission of unwished steam and also as Roll-On.



 We represent RGP in Italy

The products are ISO-9001 certified.


We are sponsoring Wintergatans Marble Machine since 2016 with
15.875 mm Chrome steel balls.

Steel Balls

Ladda ned

Ceramic Balls

Metal Alloy Balls

Plastic Balls and Rubber Balls

Glass Balls

Hollow Balls

Our Pen Stand w 23.400 pcs IKEA-Balls

Steel Balls

Music Mashine conveyor with Steel Balls

We are sponsoring Wintergatans Marble Machine since 2016 with
15.875 mm Chrome steel balls.

Our website uses cookies. By continuing to surf on the page, you agree to us using cookies. Click here for more information.

I understand