🥉 BRONZE
Bronze Bearings, Bushings & Machined Parts in Akron, OH
Bronze is the bearing and wear material of industry, and in Akron's heavy-equipment and machinery base it shows up as sleeve bearings, bushings, thrust washers, and high-load sliding components. C932 (SAE 660) bearing bronze carries the everyday bushing work, aluminum bronze handles the heaviest loads and harsh corrosion, and phosphor bronze serves springs, wear strips, and applications needing fatigue resistance. This page covers how to source and qualify bronze capability in the Akron market.
ISO 9001ISO 14001
Bronze as the Bearing Material of Choice
Bronze has been the workhorse bearing material for over a century for good reason: it slides against steel with a low, stable coefficient of friction, tolerates marginal lubrication, embeds dirt particles rather than scoring the shaft, and carries high loads without galling. Those properties make it the default for sleeve bearings, bushings, thrust washers, wear plates, and any sliding interface in industrial machinery. Akron's heavy-equipment and machinery base, which keeps a lot of moving iron in service, generates continuous demand for these components both as new production and as replacement wear parts.
For a buyer, that means bronze bushing and bearing work is a well-understood staple in the Akron supply base rather than a specialty. Shops machine cast bronze bar and continuous-cast tube into finished bushings with the bore tolerance and surface finish that bearing performance requires. The sourcing conversation centers on load, speed, lubrication, and the mating shaft, because those service conditions, not the part dimensions alone, determine which bronze alloy is right.
Matching the Alloy to the Duty
C932, also called SAE 660 or bearing bronze, is the general-purpose leaded tin bronze that handles the bulk of bushing and bearing work. It machines well, conforms slightly to embed contaminants, and performs reliably under moderate to high loads with adequate lubrication, which is why it is the default sleeve-bearing material. Aluminum bronze is the high-strength, high-hardness choice for the heaviest loads, high speeds, and corrosive or marine environments; it resists wear and corrosion far better than C932 but is harder to machine and harder on the mating surface, so it suits demanding duty. Phosphor bronze brings excellent fatigue resistance and spring properties along with good wear behavior, making it the pick for wear strips, thrust washers, springs, and parts that flex.
The selection logic is about service severity. For ordinary bushings under reasonable load and good lube, C932 is correct and economical. When loads, speeds, or corrosion exceed what C932 handles, aluminum bronze steps up. When the part flexes or needs spring behavior, phosphor bronze is right. An experienced Akron shop serving heavy-equipment customers will ask about the load, the surface speed, the lubrication regime, and the shaft hardness before recommending an alloy, and will steer you up to aluminum bronze or back down to C932 based on those answers.
Bore Tolerance, Finish, and Fit
A bronze bushing only performs if the bore, the wall, and the fits are right. The running clearance between the bushing bore and the shaft is critical: too tight and the bearing seizes as it heats and the shaft expands, too loose and it knocks and wears prematurely. So the bore tolerance, surface finish, and the press-fit interference on the outside diameter all have to be specified and held, and a good shop accounts for the bore closing in slightly after the bushing is pressed into its housing.
This is where bronze sourcing rewards experience. A shop that does bearing work routinely knows to discuss the housing bore, the shaft diameter, and the assembly method, and may recommend machining the bore to final size after pressing or leaving stock for an in-place finishing operation. When you source bronze bushings in Akron, provide the shaft size and tolerance, the housing bore, the load and speed, and the lubrication, and specify the finished bore clearance or let the supplier calculate it from the running conditions. A bushing machined to a nominal dimension without accounting for fit and thermal growth will measure correctly and still fail in the machine.
Qualifying and Documenting Bronze Parts
Filter app.mfgbase.com for CNC machining capability and the certifications your program needs. ISO 9001 is the baseline; ISO 14001 matters for suppliers serving environmentally tracked customers. For bearing and bushing work specifically, value a shop's bearing-application experience as much as its raw machining capability, because alloy selection and fit calculation are where bronze parts succeed or fail.
On documentation, require the mill or foundry certificate of conformance identifying the alloy (C932, aluminum bronze, or phosphor bronze) and tying it to the heat or lot, a first-article inspection report covering the critical bore and wall dimensions, and the surface-finish measurement on the bearing surface. For high-load or critical bearings, you may specify hardness. Put the alloy, bore tolerance, surface finish, press-fit interference, and the running conditions on the purchase order, because the common bronze failure is not a missed dimension but a wrong alloy for the load or a bore clearance that ignores thermal growth and assembly fit. Writing the service conditions down lets the supplier engineer the part to perform rather than just to print.
Frequently Asked Questions
It depends on the load, speed, lubrication, and environment. For the majority of bushing and sleeve-bearing applications under moderate to high load with adequate lubrication, C932 (SAE 660) bearing bronze is the default and most economical choice; it machines well, embeds contaminants, and performs reliably against a steel shaft. When the duty gets severe, very high loads, high sliding speeds, marginal lubrication, or corrosive and marine environments, aluminum bronze steps up with much higher strength, hardness, and wear and corrosion resistance, at the cost of harder machining and more aggressive behavior against the mating surface. For parts that flex, act as springs, or need top fatigue resistance such as wear strips and thrust washers, phosphor bronze is the right pick. The selection should follow the service conditions, not habit, so a knowledgeable Akron shop will ask about the load, the surface speed, the lubrication regime, and the shaft hardness before recommending an alloy. Give them those conditions and they can steer you up to aluminum bronze for demanding duty or keep you on cost-effective C932 where it is genuinely adequate.
Bore clearance is the most failure-prone detail in a bronze bushing, so specify it deliberately rather than just calling out a nominal bore. The running clearance between the bushing bore and the shaft has to account for thermal growth: too tight and the bearing seizes as it heats and the shaft expands in operation, too loose and it knocks and wears out early. You also have to account for the press-fit interference on the outside diameter, because pressing the bushing into its housing closes the bore down slightly, so the bore is often machined or finished to final size after the bushing is installed. To specify it correctly, provide the shaft diameter and tolerance, the housing bore, the load and speed, and the lubrication regime, and either state the required finished bore clearance or let the supplier calculate it from those running conditions. A shop with real bearing experience will discuss the assembly method and may recommend finishing the bore in place. The key point is that a bushing machined to a nominal dimension without accounting for fit, assembly, and thermal growth will measure correctly at inspection and still fail in the machine, so treat the fit as the specification, not the standalone dimension.
C932 (SAE 660) is a leaded tin bronze, the general-purpose bearing material, while aluminum bronze is a much stronger and harder family of alloys for severe duty, and the choice between them is about how demanding the application is. C932 machines easily, has some conformability that lets it embed dirt particles and protect the shaft, and performs dependably under moderate to high loads with reasonable lubrication, which covers most industrial bushings economically. Aluminum bronze offers far higher strength, hardness, and wear and corrosion resistance, making it the right choice for the heaviest loads, higher speeds, shock loading, and corrosive or marine environments where C932 would wear or corrode too quickly. The trade-offs are that aluminum bronze is harder and more expensive to machine, costs more as raw material, and is more aggressive against the mating surface, so it can require a harder shaft. The practical rule is to use C932 wherever it is genuinely adequate, since it is cheaper to buy and machine, and reserve aluminum bronze for duty that exceeds what C932 can handle. An experienced Akron shop will help you draw that line based on your actual load, speed, lubrication, and environment rather than over-specifying.
Require a mill or foundry certificate of conformance that identifies the specific alloy, C932, aluminum bronze, or phosphor bronze, and ties it to the heat or casting lot, because the alloy is the single most important variable in bearing performance and a substitution would only surface as premature wear in service. Add a first-article inspection report covering the critical dimensions, especially the bore, the wall thickness, and the outside diameter that controls the press fit, plus the surface-finish measurement on the bearing surface, since finish directly affects friction and wear. For high-load or critical bearings, you may also specify and require hardness verification. Put the alloy, bore tolerance, surface finish, press-fit interference, and the running conditions, load, speed, and lubrication, on the purchase order so the supplier can engineer the part to perform rather than just machine it to a nominal print. The most common bronze failure is not a missed dimension but the wrong alloy for the load or a bore clearance that ignored thermal growth and assembly fit, so documenting both the material and the service conditions is what protects you. Treat the purchase order as the record for both the metallurgy and the application context.
Last updated: July 2026
Find Bronze Manufacturers in Akron, OH
Search verified Akron shops that work in Bronze.
No logins. No email gates. Just results.