Machinery’s Handbook, 31st Edition
2886
Index
B elts and pulleys 2563–2615 flat belts 2566 length formula 2563
B earings
( continued )
thrust bearing
friction power loss 2421 leakage factor 2428 load 2418 parallel flat plate 2417 plain 2417 rated life 2487 roller 2448, 2449, 2491 symbols 2448, 2449
rules for diameters and speeds of pulleys 2563 speed limitations 2566
speed in compound drive 2565 synchronous belts 2607–2615, 2611 cross section 2613 designation 2607, 2613 horsepower rating 2614, 2615 length determination 2611 pitch lengths 2610 pulley diameter 2611, 2612 and flange dimension 2609 size 2612, 2615 tolerances 2613 section dimension 2609 service factors 2607 storage and handling 2604 timing 2607 tolerances 2610 tooth dimensions 2608, 2609 torque ratings 2613, 2614 width, finding 2614 width factor 2615 widths and tolerances 2611 variable speed belts 2597–2602 arc of contact 2604 cross section selection 2601 degree 2602, 2604 designation 2600 dimension 2597 drive design 2600 groove dimension 2599 horsepower rating 2601, 2602 length correction 2603 lengths 2598
static equivalent load 2497, 2498 step design 2417, 2423–2426, 2424 depth of step 2425 film thickness 2425 friction power loss 2425 hydrodynamic oil flow 2425 length of pad 2425 number of pads 2425 pad step length 2425 pitch line circumference 2425 pitch line velocity 2425 radial pad width 2424 temperature rise 2425 tapered land design 2417, 2426, 2431 film thickness 2427 friction power loss 2428 length of pad 2427 number of pads 2427 oil film flow 2428 oil flow factor 2428 oil leakage factor 2427 pitch line circumference 2427 shape factor 2428 taper values 2427 tilting pad design 2417, 2431 bearing unit load 2432 dimensionless film thickness 2434 film thickness 2433 friction coefficient 2433 length of pad 2432 number of pads 2432 operating number 2432, 2434 pitch line velocity 2427 radial pad width 2427
sheave dimension 2599 sheave groove data 2600 speed ratio 2601
V-belts 2568–2606 60 degree 2604
speed ratio correction 2602 belt lengths and center distances 2573 classical V-belts 2574 arc of contact correction 2581 cross section correction factors 2573 datum length 2575
pitch line velocity 2432 radial pad width 2432 temperature rise 2433
tolerances 2459
tolerances 2453
metric ball and roller 2454–2461 needle roller 2453 thrust bearing 2453, 2459
groove dimension 2576 horsepower ratings 2578 length correction 2580 sheave dimensions 2575, 2576–2577 speed ratio correction 2580
B el 2875 B elleville disc springs or washers 345, 350 See also Spring: disc
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