BRONZE BEARINGS

Cast bronze plain sleeve bearings are available in over 900 sizes from stock. In addition to stock sizes, made to order bronze sleeve bearings, flanged bearings, split bearings, wear plate and special machine parts are available for a variety of applications. Please send us your prints for price and delivery information.

C93200 (SAE 660) Plain Bronze Sleeve Bearings Sizes:
3/16" ID through 1/2" ID	1-3/8" ID through 1-1/2" ID
9/16" ID through 11/16" ID	1-9/16" ID through 1-7/8" ID
3/4" ID through 7/8" ID	1-15/16" ID through 2-3/8" ID
15/16" ID through 1-1/8" ID	2-7/16" ID through 3" ID
1-3/16" ID through 1-5/16" ID	3-1/4" ID through 5" ID
Do you need to make modifications to your bearings?

Running Clearance (click chart to enlarge)

Greater than normal clearance must be allowed: (1) if exceptionally high speed is involved or (2) if higher than normal loading is encountered.

Press Fits (click chart to enlarge)

Less than normal press fit proves satisfactory: (1) if the bearing is long and the wall is not exceptionally thin and (2) if the bearing is also carrying a moderate load exerted in one direction.

Standard Bearing Tolerances:

Inside Diameter under 3"............................... Plus or minus .001"

Inside Diameter 3" and Over........................ Plus or minus .0015"

Outside Diameter up to and including 3".......... Plus .002" to .003"

Outside Diameter above 3"............................. Plus .003" to .005"

All Lengths.................................................. Plus or minus .005"

Normal Concentricity....................................... 0.003 T.I.R. MAX.

Chemical Composition:

Copper.................................................................. 81.0 - 85.0%

Tin............................................................................ 6.3 - 7.5%

Lead......................................................................... 6.0 - 8.0%

Zinc.......................................................................... 2.0 - 4.0%

Minimum Physical Properties:

Tensile Strength, PSI .................................................... 35,000

Yield Strength, PSI ....................................................... 20,000

Elongation in  2 inches .................................................... 10%

Brinell Hardness @ 500 KG Load ........................................ 65

Pressure & Velocity Ratings:

Max. PV .................................................................... 75,000

Max. P ........................................................................ 4,000

Max. V ........................................................................... 750

PV Calculation:

PV is a means of measuring the performance capabilities of bearings. P is expressed as pressure or pounds per square inch on the area of the bearing. V is velocity in feet per minute of the wear surface (surface feet per minute).

For sleeve bearings, the surface speed is .262 (pi÷12) x RPM x shaft diameter in inches. P is equal to the load on the bearing in pounds divided by the projected area in square inches. For sleeve bearings, the projected area is the length x the inside diameter of the bearing. PV is then obtained by multiplying P x V as shown in the following example:

3/4" shaft @ 341 RPM, 90 lb. total load, bearing length 1".

V = .262 x RPM x shaft diameter, or .262 x 341 x .750 = 67 sfpm.

P = total load ÷ projected area (area = .750 x 1.0 = .75 in.), or 90 lbs. ÷ .75 = 120 psi.

PV = 120 psi x 67 sfpm = 8040 PV