PRECISION BALLS FOR ENGINEERING & INDUSTRY
Precision You Can Specify. Performance You Can Depend On.
Source precision balls by material, diameter, grade, hardness, roundness, surface finish, and application requirement—from standard production components to hard-to-find specialty balls.
If we do not have, we can get it. Ask about hard-to-find materials, sizes, finishes, and speciality requirements.
Multiple Precision Grades | ABMA & ISO Specifications | DFARS-Compliant Options | Standard, custom, and hard-to-find materials
START WITH THE APPLICATION
What does the ball need to do?
The correct specification begins with function. Choose the closest application and we will help determine the right material, grade, diameter, finish, and documentation.
Discuss an unusual application >
Bearings
Precision balls for radial, thrust, miniature, high-speed, and speciality bearing assemblies.
Specify Bearing Balls >
Oil, Gas & Drilling
Hard, wear-resistant ball materials for drilling tools, downhole assemblies, and demanding environments.
Specify Oil & Gas Balls >
Ball Screws & Linear Motion
Balls selected for dimensional consistency, smooth motion, repeatability, and controlled preload.
Specify Linear-Motion Balls >
Wind Power & Energy
Ball components for motion, control, bearing, and mechanical systems exposed to long service cycles.
Specify Energy Components >
Valves & Flow Control
Ball components for check valves, metering, sealing, spray systems, pumps, and fluid control.
Specify Valve Balls >
Food, Chemical & Processing
Corrosion-resistant and application-compatible balls for processing, valves, grinding, and product contact.
Specify Process Balls >
Quick Connects & Swivels
Durable precision balls for locking, detent, coupling, rotational, and retention mechanisms.
Specify Component Balls >
Custom Engineering Uses
Inspection, metrology, electronics, spacers, instruments, prototypes, and specialized assemblies.
Send Us Your Requirement >
HARD TO FIND PRECISION BALLS
If we do not have it, we can get it.
You do not need to know the exact catalog item before contacting us. Start with the function, environment, or existing specification, and we will help identify a practical sourcing path.
Standard Production Balls
Common alloys, diameters, precision grades, finishes, and quantity requirements.
Speciality Materials & Sizes
Unusual metals, ceramics, polymers, precious metals, and nonstandard dimensions.
Cross-Reference & Replacement
Use an existing part number, drawing, sample, or functional requirement to begin the search.
PRECISION BALL MATERIALS
Select the material that matches the environment
Material choice affects hardness, wear, corrosion resistance, magnetism, weight, electrical behavior, contamination, service life, and cost.
Carbon Steel Balls
Economical, durable, steel options for general mechanical, bearing, finishing, grinding, and industrial applications.
- Low and high carbon grades
- Broad hardness options
- Useful where corrosion resistance is secondary
Select Carbon Steel >
Glass Balls
Precision glass balls for valves, optics, electronics, spacers, flow control, decorative, and engineering uses.
- Soda lime and borosilicate
- Valve-grade options
- Clear and colored glass
Select Glass Balls >
Chrome Steel Balls
High hardness, excellent wear resistance, and consistent precision for bearings and demanding mechanical components.
- AISI 52100-type applications
- High load and repeat contact
- Bearings, ball screws, swivels, and drilling
Select Chrome Steel >
Tungsten Carbide Balls
Very high density and extreme hardness for wear, impact, precision, metrology, and specialized high-load applications.
- Exceptional wear
- High mass in a compact diameter
- Specialized precision grades available
Select Tungsten Carbide >
Stainless Steel Balls
Corrosion-resistant alloys for food, chemical, pharmaceutical, marine, valve, bearing, and precision assemblies.
- 302, 304, 304L, 316, 316L
- 420HC, 430, 440C, 904L, Nitronic 50
- Annealed, non-annealed, and passivated options
Select Stainless Steel >
Zirconium Oxide Balls
Hard, smooth ceramic balls for chemical resistance, electrical insulation, low metallic contamination, and specialty precision uses.
- Industrial and pharmaceutical options
- Smooth, wear-resistant surfaces
- Useful where metallic media is undesirable
Select Zirconium Oxide >
Need another material?
Ask about specialty metals, engineering polymers, ceramics, and precious-metal balls.
Silicon nitride · Alumina oxide · Zirconia oxide · Silicon carbide · Torlon · Nylon · Delrin · Polypropylene · Polyacetal · Phenolic · Acrylic · Epoxy glass · PTFE/Teflon · K-Monel · R-Monel · M50 · Aluminum · Brass · Aluminum bronze · Hastelloy · Stellite Star 2 cobalt · Inconel · Pure silica · Gold · Platinum · Tantalum
GRADES & SPECIFICATIONS
Precision is more than the nominal diameter.
Accurate sourcing requires the complete functional specification—not just the ball material and size.
WHAT TO SPECIFY
Define the critical requirements.
Provide everything you know. Missing details can often be resolved by understanding the application.
✓ Diameter
Nominal metric or inch size.
✓ Sphericity
Roundness and geometric consistency.
✓ Hardness
Core or surface hardness requirement.
✓ Magnetic Behavior
Magnetic, slightly magnetic, or nonmagnetic.
✓ Precision Grade
ABMA, ISO, or application tolerance.
✓ Surface Finish
Texture, polish, and visible condition.
✓ Corrosion Resistance
Exposure to moisture, chemicals, or cleaning.
✓ Documentation
Certificates, compliance, traceability, or inspection data.
COMMON STARTING POINTS
Use the application to set priorities
These examples are intended as selection prompts rather than fixed specifications.
Bearings: Grade, roundness, diameter variation, hardness, and surface finish.
Valves: Corrosion resistance, seal condition, material compatibility, and finish.
Ball Screws: Diameter control, consistency, load behavior, finish, and grade.
Food Contact: Alloy, corrosion resistance, surface condition, passivation, and documentation.
High Wear: Hardness, toughness, density, abrasion resistance, and service life.
Electronics: Material purity, conductivity or insulation, size, and surface quality.
COMMON PRECISION BALL USES
One component. Hundreds of possible functions.
Precision balls support motion, sealing, control, measurement, load transfer, retention, processing, and product design.
High-Precision Bearings
Rotational assemblies requiring repeatable geometry, smooth operation, and controlled contact.
MOTION
Quick Connects
Locking and retention balls for couplings, sockets, connectors, and detachable assemblies.
Retention
Wind Power
Precision motion and mechanical components intended for long duty cycles and demanding loads.
ENERGY
Ball Screws
Linear-motion systems where diameter consistency influences preload, accuracy, and travel.
POSITIONING
Swivels & Detents
Controlled movement, indexed positioning, tactile feedback, and retention mechanisms.
MECHANICAL CONTROL
Food & Chemical Grinding
Selected materials for product contact, wear, corrosion resistance, and process compatibility.
PROCESSING
Check Valves
Sealing and flow-control functions in liquid, gas, spray, dosing, and pumping systems.
FLOW CONTROL
Oil & Gas Drilling
High-hardness and wear-resistant components for severe mechanical environments.
HEAVY INDUSTRY
Vibratory Finishing
Ball media for burnishing, polishing, surface refinement, and component finishing.
SURFACE FINISHING
WHY SOURCE THROUGH GLEN MILLS
Get the specification right before you place the order.
We help convert the engineering requirement into a practical sourcing specification and purchasing path.
Broad Material Access
Standard steels, stainless alloys, glass, ceramics, carbides, polymers, and specialty metals.
Application Guidance
Recommendations built around function, exposure, load, wear, and product contact.
Flexible Quantities
Samples, prototypes, production orders, and repeat-supply programs.
Precision-Grade Options
Selection based on diameter, grade, roundness, surface finish, and tolerance.
Compliance Support
Ask about ABMA, ISO, DFARS, food-contact, passivation, and documentation needs.
Hard-to-Find Sourcing
If we do not have it, we can get it.
REQUEST A PRECISION BALL RECOMMENDATION
Send us the specification—or just describe the application.
Our team can work from a known material and grade, an existing part number, a drawing, or the performance requirement you are trying to meet.
- Material, diameter, grade, tolerance, and finish
- Operating environment and contact materials
- Quantity, packaging, and repeat-order requirements
- Documentation, compliance, and traceability needs
If we do not have it, we can get it.
Tell us what you need.
A Glen Mills specialist will review the details and contact you about available options.
PRECISION BALL FAQ
Common sourcing questions.
These answers help customers prepare the information needed for a faster recommendation or quotation.
What information should I provide for a quote?
Include the material, diameter, grade or tolerance, quantity, surface finish, hardness, application, and any compliance or documentation requirements. An existing part number or drawing is also helpful.
Are both metric and inch diameters available?
Precision balls are commonly sourced in both measurement systems. Availability depends on the material, grade, diameter, and quantity required.
Can you source unusual or specialty materials?
Yes. Glen Mills can investigate ceramics, engineering polymers, specialty alloys, high-temperature metals, and other uncommon materials.
Can Glen Mills help when the exact material is unknown?
Yes. Describe the application, operating environment, load, wear, corrosion, temperature, product-contact, and magnetic requirements.
Can I request food-contact or pharmaceutical options?
Yes. Provide the intended product contact, cleaning process, alloy preference, finish, passivation, and documentation requirements.
Do you support recurring production orders?
Yes. Include estimated order quantity, annual usage, delivery schedule, packaging needs, and traceability requirements.
STANDARD OR SPECIALITY
Start with the specification you know.
Whether you have a complete drawing or only an application problem, Glen Mills can help identify the next step.