PV DATA (for comparison only. Anchor Bronze Materials are highlighted in bold text)

 

 

MAX. PV

MAX P

MAX V

1

Manganese Bronze Bearings*

150,000

8,000

100

2

Aluminum Bronze Bearings*

125,000

4,500

225

3

Oil-Filled Polyacetal

93,500

2,800

230

4

Cast Bronze C93200 Brgs.*

75,000

4,000

750

5

BU Dry Lubricant Bearings

51,000

36,250

1,000

6

SAE841 Bronze PM Bearings

50,000

2,000

1,200

7

SAE 863 Fe Cu PM Bearings

35,000

4,000

225

8

60 Cu 40 Fe PM Bearings

35,000

2,500

800

9

SAE850 Fe Bearings

30,000

3,000

400

10

High Tin Babbitt-89% Brgs.

30,000

1,500

1,200

11

BMT Teflon® Composite Brgs.

34,300

20,000

150

12

BMP Teflon® Composite Brgs.

34,200

20,000

50

13

BJ Liner Bearings

20,000

1,500

40

 

(JLON®4200 Tape Liner)

 

 

 

14

Tin Babbitt Low Pb (10%) Brgs.

18,000

1,300

1,400

15

Cast Molded Nylon Brgs.

17,000

3,000

450

16

Graphite/Metallized Bearings

15,000

1,500

500

17

Carbon Bearings

15,000

600

2,500

18

Tin Babbitt Low Pb -6% Brgs.

12,000

700

800

19

BJ4 Bearings(JLON®4200)

30,000

1,100

400

20

BJ5 Bearings(JLON®5500)

20,000

800

400

21

BJ7 Bearings(JLON®7000)

40,000

1,050

400

22

U.H.M.W. Polyethylene Brgs.

4,000

1,200

50

23

Nylon-Molyfill-2% Bearings

3,500

380

475

24

Delrin® AF Bearings

3,000

1,000

1,000

25

Nylon101 Bearings

3,000

400

360

26

Virgin Teflon® Bearings

1,000

500

100

All values are based on 72o room temperature and the standard lubricant for the bearing in question. All of the V's (and therefore the
PV's) can be raised by special lubricating techniques. Not all materials listed above are available from Anchor Bronze & Metals.

+General reference data only. * Also available graphited (25 - 35% graphited area).

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 projected
area of the bearing. V is velocity in feet per minute of the wear surface (surface feet per minute).

For sleeve (plane) 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 (plane) 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 sq. in.), or 90 lbs. ÷ .75 = 120 psi
PV = 120 psi x 67 sfpm = 8040 PV.