The Complete Guide to JIS Bronze Standards for Oilless Bearings: CAC, ASTM, and EN Equivalents

High-Performance Self-Lubricating Bronze Bushing Solutions & Technologies. Minimize downtime, extend service life, and reduce costs for dynamic applications.

The Complete Guide to JIS Bronze Standards for Oilless Bearings: CAC, ASTM, and EN Equivalents

In the global manufacturing landscape, Japanese Industrial Standards (JIS) are often considered the “gold standard” for self-lubricating bearing design. Whether you are looking at a legacy blueprint or a modern engineering spec, understanding the transition from old Japanese codes to modern CAC designations is critical.

1. Understanding JIS Naming Conventions

Japanese standards for copper alloys (specifically JIS H 5120 for castings and JIS H 5121 for continuous castings) have evolved. You will often encounter two types of codes:

CAC Series (Modern): The current Unified Numbering System in Japan (e.g., CAC406).
Legacy Codes (Old): Still widely used in maintenance and older drawings.
- BC: Bronze Casting (General purpose).
- PBC: Phosphor Bronze Casting (Toughness/Gears).
- LBC: Leaded Bronze Casting (Self-lubricating properties).
- ALBC: Aluminum Bronze Casting (High strength/Corrosion resistance).
- HBSC: High Strength Brass Casting (Ultra-heavy loads).

2. Global Material Cross-Reference Table

Below is the definitive comparison between JIS, American (ASTM), and European (EN 1982) standards for Oilless Bearings applications.

Material Category	JIS (New/Old)	ASTM (UNS)	EN 1982	Characteristics & Use Case
Leaded Tin Bronze	CAC406 (BC6)	C83600	CC491K	“85-5-5-5” Gunmetal. Best balanced performance for general bushings.
Leaded Tin Bronze	CAC603 (LBC3)	C93200	CC493K	Equivalent to SAE 660. The most common bearing material globally.
High Leaded Bronze	CAC604 (LBC4)	C93500	CC494K	High lead for emergency lubrication in low-oil conditions.
Tin Bronze	CAC403 (BC3)	C90500	CC480K	Admiralty Gunmetal. High wear and seawater resistance.
Aluminium Bronze	CAC703 (ALBC3)	C95800	CC333G	Nickel-Alu Bronze. Extreme strength for marine and offshore use.
Phosphor Bronze	CAC502 (PBC2)	C90700	CC481K	High fatigue strength. Ideal for worm gears and heavy-duty parts.
High Strength Brass	CAC304 (HBSC4)	C86300	CC762S	CuZn25Al5. The strongest base metal for 500# series.

3. Spotlight on CAC304 (CuZn25Al5): The Heavy-Duty Champion

If your application involves ultra-high loads and low speeds (such as bridge bearings, dam gates, or heavy construction machinery), CAC304 (formerly HBSC4) is the industry standard.

Technical Profile: Also known as CuZn25Al5, this Manganese Bronze offers a tensile strength exceeding 750 MPa and a Brinell hardness above 210 HB.
Oilless Bearings: It is the primary matrix used for Solid Lubricant Embedded Bearings. The hardness of the CAC304 base provides the necessary support for graphite plugs, ensuring the bearing does not deform under extreme pressure.

4. Why JIS Standards Matter in the Oilless Bearings Industry

self-lubricating parts are derived from JIS grades.

Standard for Lubrication: JIS CAC406 and CAC603 are the most verified base materials for embedding solid lubricants like graphite or MoS2.
Precision: JIS standards provide strict tolerances for grain structure, which is essential for the consistent wear of a self-lubricating bushing.
Global Availability: While the names change (from LTB to CAC to ASTM), the chemical properties of these JIS-compliant alloys are recognized by foundries worldwide.

When sourcing or specifying these materials, use these high-value terms to ensure standard compliance:

JIS H 5120 Standard Copper Alloy
CAC406 (BC6) Bushing Material Equivalent
JIS CAC304 High Strength Brass Properties
CuZn25Al5 to JIS CAC304 Cross Reference
ASTM C93200 vs JIS CAC603
Self-lubricating Bushing Matrix Materials

Summary Recommendation

For General Purpose: Specify JIS CAC406 (ASTM C83600). It is cost-effective and reliable.
For Standard Bearings: Specify JIS CAC603 (SAE 660/C93200). It is the industry workhorse.
For Ultra-High Loads: Specify JIS CAC304 (CuZn25Al5/C86300). This is the best choice for maintenance-free, heavy-duty applications.
For Marine Environments: Specify JIS CAC703 (ALBC3/C95800) for superior salt-water corrosion resistance.

Discover more

Technical Data: JIS Copper Alloy Casting Standards & Global Equivalents

Engineers and procurement specialists use this data to ensure material compliance across international projects. Whether you are replacing a legacy BC6 part or specifying a new CAC304 high-load bushing, this chart serves as your primary reference.

Mechanical Properties & International Cross-Reference Table

Material Type	New Code (JIS)	Old Code	Tensile Strength ( $N / m m^{2}$ )	Elongation (%)	Hardness (HB)	ASTM Equivalent	DIN Equivalent
Brass	CAC202	YBsC2	$\geq$ 195	$\geq$ 20	–	C85400	CuZn33Pb
	CAC203	YBsC3	$\geq$ 245	$\geq$ 20	–	C85700	CuZn37Pb
High Strength Brass	CAC301	HBsC1	$\geq$ 430	$\geq$ 20	–	C86500	CuZn35Al1
	CAC302	HBsC2	$\geq$ 490	$\geq$ 20	–	C86400	CuZn34Al1
	CAC303	HBsC3	$\geq$ 635	$\geq$ 18	$\geq$ 165	C86200	CuZn25Al5
	CAC304	HBsC4	$\geq$ 755	$\geq$ 15	$\geq$ 200	C86300	CuZn25Al5
Bronze	CAC401	BC1	$\geq$ 165	$\geq$ 15	–	C84400	–
	CAC402	BC2	$\geq$ 245	$\geq$ 20	–	C90300	–
	CAC403	BC3	$\geq$ 245	$\geq$ 15	–	C90500	CuSn10Zn
	CAC406	BC6	$\geq$ 195	$\geq$ 15	–	C83600	CuSn5ZnPb
	CAC407	BC7	$\geq$ 215	$\geq$ 18	–	C92200	–
Phosphor Bronze	CAC502A	PBC2	$\geq$ 195	$\geq$ 5	$\geq$ 60	–	CuSn10
	CAC502B	PBC2B	$\geq$ 295	$\geq$ 5	$\geq$ 80	C90700	CuSn12
	CAC503B	PBC3B	$\geq$ 265	$\geq$ 3	$\geq$ 90	C91000	CuSn12
Lead Bronze	CAC602	LBC2	$\geq$ 195	$\geq$ 10	$\geq$ 65	–	CuPb5Sn
	CAC603	LBC3	$\geq$ 175	$\geq$ 7	$\geq$ 60	C93700	CuPb10Sn
	CAC604	LBC4	$\geq$ 165	$\geq$ 5	$\geq$ 55	C93800	CuPb15Sn
	CAC605	LBC5	$\geq$ 145	$\geq$ 5	$\geq$ 45	–	CuPb20Sn
	CAC607	–	$\geq$ 207	$\geq$ 15	–	C93200	–
Aluminum Bronze	CAC701	AlBC1	$\geq$ 440	$\geq$ 25	$\geq$ 80	C95200	CuAl10Fe
	CAC702	AlBC2	$\geq$ 490	$\geq$ 20	$\geq$ 120	C95400	CuAl9Ni
	CAC703	AlBC3	$\geq$ 590	$\geq$ 15	$\geq$ 150	C95800	CuAl10Ni
	CAC704	AlBC4	$\geq$ 590	$\geq$ 15	$\geq$ 160	C95700	–
	CAC705	–	$\geq$ 620	$\geq$ 6	$\geq$ 190	C95500	–
Silicon Bronze	CAC801	SzBC1	$\geq$ 345	$\geq$ 25	–	C87400	–
	CAC802	SzBC2	$\geq$ 440	$\geq$ 12	–	C87500	CuZn15Si4

Metal Bushing (Lubricated Metal) -Self-Lubricating Bushing Materials

Bushings are specialized, self-lubricating metal components widely utilized across various industries due to their durability and low maintenance requirements. Self-lubricating metal bushings are engineered to function without additional lubrication in numerous applications, thereby minimizing maintenance needs. These bushings are available in various series and configurations, such as flanged bushings and split bearings, to meet specific application requirements.

Metal-Polymer Anti-Friction Plain Bearings

Metal-Polymer Composite Self-lubricating Bushing Material

Steel Back + Porous Bronze Sinter + PTFE

Metal-Polymer Plain Bearings Grease Lubricated

Bronze Bearings made of CuSn8 with Lubrication Indents

Bronze Bearings and Bronze Sleeve Bushings made of CuSn8 with Lubrication Indents

Cast Bronze Bushings with Solid Lubricant Inserts

Cast Bronze Bearings with Solid Lubricant Inserts

Bimetal Plain Bearings

Steel + CuPb10Sn10 with indents

Steel Bronze Bushing

Steel Backing and Bronze Overlay

Compare prices and delivery times, then place your order directly online or request a quotation.

lubrication-free Bearing bushing products

Self-lubricating Bushing For High Performance And Low Maintenance

Browse Our Products

bronze bearing technical

Self-lubricating Bronze Bushing characteristic

Manufacturing on DemanD

Delivering the right materials promptly to help customers save time and money!

PLAIN BEARING BUSHING

METAL-POLYMER BEARINGS

METAL BUSHING

Explore All Products

Support

Plain bearings

Bearings, Gears & Custom Parts

Custom Parts Services

Bearing Technology

Compare Service Life

Reduce Downtime

Industries

shop

shop

shop

Metal Bushing

Metal Service

The Complete Guide to JIS Bronze Standards for Oilless Bearings: CAC, ASTM, and EN Equivalents

The Complete Guide to JIS Bronze Standards for Oilless Bearings: CAC, ASTM, and EN Equivalents

The Complete Guide to JIS Bronze Standards for Oilless Bearings: CAC, ASTM, and EN Equivalents

1. Understanding JIS Naming Conventions

2. Global Material Cross-Reference Table

3. Spotlight on CAC304 (CuZn25Al5): The Heavy-Duty Champion

4. Why JIS Standards Matter in the Oilless Bearings Industry

Summary Recommendation

Technical Data: JIS Copper Alloy Casting Standards & Global Equivalents

Technical Data: JIS Copper Alloy Casting Standards & Global Equivalents

Mechanical Properties & International Cross-Reference Table

Metal Bushing (Lubricated Metal) -Self-Lubricating Bushing Materials

Metal-Polymer Anti-Friction Plain Bearings

Metal-Polymer Plain Bearings Grease Lubricated

Bronze Bearings made of CuSn8 with Lubrication Indents

Cast Bronze Bushings with Solid Lubricant Inserts

Bimetal Plain Bearings

Steel Bronze Bushing

lubrication-free Bearing bushing products

Self-lubricating Bushing For High Performance And Low Maintenance