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When your project demands a rolling element or weldable sphere that won't deform under load, finding the right solid steel ball bearing in the exact diameter can be the difference between a clean build and a costly rework. Machinists, fabricators, hobbyists, and maintenance engineers all face the same challenge: sourcing consistent, dimensionally accurate steel balls across a wide size range without minimum-order headaches.
These solid iron and steel ball bearings are available in diameters from 7mm to 110mm (approximately 0.28 in to 4.33 in), including the common 25.4mm (1 inch) size. Each sphere is manufactured to a uniform round profile suitable for weld-in applications, load-bearing assemblies, and precision mechanical use. Pack sizes range from 1 piece to 100 pieces to match both prototype and production-volume needs.
Typical use cases include check valve seats and ball valve components, jig and fixture locating elements, decorative metalwork and sculpture welding, gravity-fed conveyor and chute systems, and replacement rolling elements in light-duty bearing housings. The broad diameter range makes these solid steel ball bearings a versatile stock item for any workshop or parts room.
Available from 7mm to 110mm (0.28 in – 4.33 in), including the standard 1-inch (25.4mm) size, covering the majority of industrial and DIY diameter requirements in a single product line.
Solid iron/steel composition allows direct MIG, TIG, or spot welding into fabricated assemblies, valve seats, and decorative metalwork without the risk of hollow-sphere collapse.
Each ball is formed to a uniform round geometry, ensuring repeatable seating in valve bodies, check valves, and locating fixtures where runout or flat spots would cause leakage or misalignment.
Order 1, 5, 10, 20, 50, or 100 pieces per SKU — ideal for prototyping single assemblies or stocking a production line without over-purchasing.
Used in check valves, ball valves, gravity conveyors, jig locators, sculpture fabrication, and light-duty rolling element replacements across manufacturing, maintenance, and craft workshops.
42 diameter options from 7mm to 110mm stocked in multiple pack sizes, reducing lead time for mixed-size orders and eliminating the need to source from multiple suppliers.
| Material | Solid iron / carbon steel |
|---|---|
| Diameter Range | 7mm – 110mm (0.28 in – 4.33 in) |
| Available Diameters | 7, 7.5, 8, 8.5, 9, 9.5, 10, 11, 12, 12.7, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 25.4, 26, 27, 28, 29, 30, 32, 35, 38, 40, 42, 45, 50, 60, 62, 70, 80, 90, 100, 110 mm |
| Shape | Full sphere (solid) |
| Surface Finish | See variant options |
| Hardness | See variant options |
| Diameter Tolerance | See variant options |
| Pack Sizes Available | 1, 5, 10, 20, 50, 100 pieces |
| Weldability | Yes — suitable for MIG, TIG, and spot welding |
| Typical Applications | Check valves, ball valves, jig locators, conveyors, decorative fabrication, rolling element replacement |
Measure the bore or seat diameter of your housing, valve body, or fixture with calipers. The ball should match the seat diameter for valve applications (a slight interference fit is typical for check valves) or match the bore diameter for rolling/locating use. If you are between sizes, contact us to confirm — we stock 42 diameters from 7mm to 110mm including the standard 25.4mm (1 inch) size.
These are solid iron/steel spheres, not hollow, so they can withstand compressive loads typical of jig locators, press-fit seats, and gravity conveyor applications. For high-cycle precision bearing races with specific load ratings, contact us to confirm the hardness and tolerance grade of the size you need.
Yes. The solid iron/steel construction is compatible with MIG, TIG, and spot welding. They are commonly welded into decorative metalwork, sculpture frames, and fabricated valve seats. Preheat the surrounding material as needed based on your base metal and welding process to minimize distortion.
Carbon steel and iron balls will oxidize if exposed to moisture without a protective coating. For outdoor or wet environments, apply a rust-inhibiting primer, paint, or oil film after installation. If corrosion resistance is a primary requirement, contact us — stainless steel ball options may be available for your diameter.
These balls are designed to seat in standard valve bodies where the ball diameter matches the seat bore. Common check valve sizes such as 12mm, 15mm, 20mm, 25mm, and 25.4mm (1 inch) are all stocked. Always verify the seat diameter and required surface finish with your valve specification before ordering.
For prototyping or single-unit repairs, the 1-piece or 5-piece pack keeps cost low. For small production batches, the 10- or 20-piece packs offer a per-unit price reduction. For higher-volume production or workshop stocking, the 50- or 100-piece packs provide the best per-unit value. Select your diameter and pack size from the variant options above.
The current listed range covers 7mm to 110mm across 42 diameter steps. If you require a size outside this range or a non-standard diameter, contact us to confirm availability — we may be able to source specific sizes for larger orders.
