SF18-13.5 Cage Freewheels Centrifugal Sprag Clutch Bearing
SF18-13.5 Cage Freewheels Centrifugal Sprag Clutch Bearing
Features
Cage Freewheels SF are sprag freewheels to be
installed between customer-supplied inner and
outer rings.
The freewheels SF are used as:
➧ Backstops
➧ Overrunning Clutches
➧ Indexing Freewheels
In addition to the standard type, two other
types are available for extended service life.
Nominal torques up to 93 000 Nm.
Dimension and Capacity
| Freewheel Size |
Type
|
Nominal t orque MN Nm |
Type | Nominal t orque MN Nm |
Type | Nominal t orque MN Nm |
Sprag lift-off at outer ring speed min-1 |
J mm |
D mm |
B mm |
K mm |
Sprags Quantity | Weight kg |
| SF18-13,5 | J | 66 | 18,80 | 35,47 | 13,5 | 50 | 10 | 0,04 | |||||
| SF23-13,5 | J | 120 | 23,63 | 40,29 | 13,5 | 55 | 12 | 0,04 | |||||
| SF27-13,5 | J | 160 | JT | 160 | JZ | 100 | 3 600 | 27,78 | 44,42 | 13,5 | 65 | 14 | 0,05 |
| SF31-13,5 | J | 170 | JT | 170 | JZ | 110 | 3 400 | 31,75 | 48,41 | 13,5 | 70 | 12 | 0,04 |
| SF32-21,5 | J | 400 | 32,77 | 49,44 | 21,5 | 65 | 14 | 0,07 | |||||
| SF37-14,5 | K | 270 | KT | 270 | KZ | 210 | 2 900 | 37 | 55 | 14,5 | 75 | 14 | 0,06 |
| SF42-21 | J | 720 | 42,10 | 58,76 | 21 | 85 | 18 | 0,09 | |||||
| SF44-14,5 | K | 500 | KT | 500 | KZ | 400 | 2 250 | 44 | 62 | 14,5 | 90 | 20 | 0,08 |
| SF46-21 | J | 840 | 46,77 | 63,43 | 21 | 90 | 20 | 0,10 | |||||
| SF50-18,5 | K | 680 | KT | 680 | KZ | 580 | 2 250 | 50 | 68 | 18,5 | 90 | 20 | 0,10 |
| SF56-21 | J | 1 050 | 56,12 | 72,78 | 21 | 100 | 22 | 0,11 | |||||
| SF57-18,5 | K | 950 | KT | 950 | KZ | 800 | 2 000 | 57 | 75 | 18,5 | 105 | 24 | 0,13 |
| SF61-21 | J | 1 300 | JT | 1 300 | JZ | 1 150 | 1 550 | 61,91 | 78,57 | 21 | 110 | 26 | 0,14 |
| SF72-23,5 | K | 2 100 | KT | 2 100 | KZ | 1 850 | 1 550 | 72 | 90 | 23,5 | 135 | 32 | 0,23 |
| SF82-25 | K | 2 300 | KT | 2 300 | KZ | 2 100 | 1 450 | 82 | 100 | 25 | 140 | 36 | 0,26 |
| SF107-25 | K | 3 300 | KT | 3 300 | KZ | 3 100 | 1 300 | 107 | 125 | 25 | 170 | 48 | 0,35 |
| SF127-25 | K | 4 900 | KT | 4 900 | KZ | 4 600 | 1 200 | 127 | 145 | 25 | 210 | 56 | 0,40 |
| SF140-50 | S | 13 600 | ST | 13 600 | SZ | 10 500 | 950 | 140 | 180 | 50 | 260 | 24 | 1,70 |
| SF140-63 | S | 18 000 | ST | 18 000 | SZ | 14 000 | 800 | 140 | 180 | 63 | 260 | 24 | 2,00 |
| SF170-50 | S | 17 000 | ST | 17 000 | SZ | 13 500 | 880 | 170 | 210 | 50 | 290 | 28 | 1,95 |
| SF170-63 | S | 23 000 | ST | 23 000 | SZ | 18 500 | 720 | 170 | 210 | 63 | 290 | 28 | 2,40 |
| SF200-50 | S | 23 000 | ST | 23 000 | SZ | 18 500 | 820 | 200 | 240 | 50 | 325 | 36 | 2,50 |
| SF200-63 | S | 29 000 | ST | 29 000 | SZ | 23 500 | 680 | 200 | 240 | 63 | 325 | 36 | 3,10 |
| SF230-63 | S | 37 000 | ST | 37 000 | SZ | 29 500 | 650 | 230 | 270 | 63 | 360 | 45 | 3,90 |
| SF270-50 | S | 35 000 | ST | 35 000 | SZ | 29 500 | 720 | 270 | 310 | 50 | 410 | 48 | 3,40 |
| SF270-63 | S | 44 000 | ST | 44 000 | SZ | 37 000 | 600 | 270 | 310 | 63 | 410 | 48 | 4,20 |
| SF340-50 | S | 45 000 | ST | 45 000 | SZ | 43 000 | 640 | 340 | 380 | 50 | 510 | 60 | 4,20 |
| SF340-63 | S | 67 500 | ST | 67 500 | SZ | 57 500 | 540 | 340 | 380 | 63 | 510 | 60 | 5,20 |
| SF380-50 | S | 57 000 | ST | 57 000 | SZ | 48 500 | 610 | 380 | 420 | 50 | 550 | 63 | 4,40 |
| SF440-63 | S | 93 000 | ST | 93 000 | SZ | 80 000 | 470 | 440 | 480 | 63 | 640 | 72 | 6,20 |
The theoretical nominal torque applies only for ideal concentricity between the inner and outer ring.
The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.
Mounting
The lateral guidance of the Cage Freewheels can be effected either by a shoulder on the outer ring or by guard rings or guard discs which are fixed in the outer ring. Torque transmission capacity can be increased if several cages are arranged side by side. In this case please consult with RINGSPANN on transmissible torques. Please note the technical points on page 118regarding the sprag tracks.
Example for ordering
Freewheel size SF 44-14,5, standard type:
• SF 44-14,5 K
Pictures
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