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Description
Types AL..F2D2/F4D2 are roller type freewheels, self contained, sealed and bearing supported, using two
160.. series bearings. Units are delivered oil lubricated.
Primarily used as overrunning or indexing clutches, the cover combination is chosen according to the type
of drive, as shown overleaf. D2 cover is used to close the unit. It is equipped with two screws for oil filling,
drain and level. The shaft seal is a Vring type. Cover and seal have been designed to be oil proof with
minimum drag torque.
We recommend the unit is supplied assembled. Please specify inner race direction of rotation seen from
the D2 flange.
Technical Datas
Item | AL..F2D2 F4D2 |
Brand | SUMA |
Material | GCr15 |
Bore size | 15-250 mm |
Outer Diameter | 62-610 mm |
Width(L1) | 42-396mm |
Torque | 55-287500 Nm |
Drag torque | 11-6500 Ncm |
Weight | 0.9-680 kg |
Delivery time | 15 days |
Dimension and Capacity

Type | Size |
| Overrunning speeds |
| Wei | Drag Torque | ||||||||||||
| dH7 (mm) | TKN1 (Nm ) | Nimax2) (min-1) | Namax3) (min-1) | Dn7 (mm) | L1 (mm) | D5 (mm) | D3 (mm) | z (mm) | O mm | D4h7 mm | t mm | L5 mm | K mm | s mm | f mm |
(kg) | TR (Ncm) |
AL..F2D2 AL..F4D2 | 12 | 55 | 2500 | 7200 | 62 | 42 | 85 | 72 | 3 | 5.5 | 42 | 3 | 44 | 0.5 | 10.3 | 0.5 | 0.9 | 11 |
15 | 125 | 1900 | 6500 | 68 | 52 | 92 | 78 | 3 | 5.5 | 47 | 3 | 54 | 0.5 | 10.3 | 0.8 | 1.3 | 15 | |
20 | 181 | 1600 | 5600 | 75 | 57 | 98 | 85 | 4 | 5.5 | 55 | 3 | 59 | 0.5 | 10.8 | 0.8 | 1.7 | 18 | |
25 | 288 | 1400 | 4500 | 90 | 60 | 118 | 104 | 6 | 6.6 | 68 | 3 | 62 | 0.5 | 10.5 | 1 | 2.6 | 36 | |
30 | 500 | 1300 | 4100 | 100 | 68 | 128 | 114 | 6 | 6.6 | 75 | 3 | 70 | 0.5 | 11.3 | 1 | 3.5 | 48 | |
35 | 725 | 1100 | 3800 | 110 | 74 | 138 | 124 | 6 | 6.6 | 80 | 3.5 | 76 | 1 | 11.8 | 1 | 4.5 | 60 | |
40 | 1025 | 950 | 3400 | 125 | 86 | 160 | 142 | 6 | 9 | 90 | 3.5 | 88 | 1 | 13.8 | 1.5 | 6.9 | 84 | |
45 | 1125 | 900 | 3200 | 130 | 86 | 165 | 146 | 8 | 9 | 95 | 3.5 | 88 | 1 | 13.8 | 1.5 | 7.1 | 94 | |
50 | 2125 | 850 | 2800 | 150 | 92 | 185 | 166 | 8 | 9 | 110 | 4 | 94 | 1 | 12.8 | 1.5 | 10.1 | 158 | |
55 | 2625 | 720 | 2650 | 160 | 104 | 204 | 182 | 8 | 11 | 115 | 4 | 106 | 1.5 | 16.8 | 2 | 13.1 | 150 | |
60 | 3500 | 680 | 2450 | 170 | 114 | 214 | 192 | 10 | 11 | 125 | 4 | 116 | 1.5 | 16.3 | 2 | 15.6 | 160 | |
70 | 5750 | 580 | 2150 | 190 | 134 | 234 | 212 | 10 | 11 | 140 | 4 | 136 | 1.5 | 17.8 | 2.5 | 20.4 | 360 | |
80 | 8500 | 480 | 1900 | 210 | 144 | 254 | 232 | 10 | 11 | 160 | 4 | 146.3 | 1.5 | 20.3 | 2.5 | 26.7 | 360 | |
90 | 14500 | 380 | 1700 | 230 | 158 | 278 | 254 | 10 | 14 | 180 | 4.5 | 161 | 1.5 | 20 | 3 | 39 | 680 | |
100 | 20000 | 350 | 1450 | 270 | 182 | 335 | 305 | 10 | 18 | 210 | 5 | 184 | 2.5 | 28 | 3 | 66 | 880 | |
120 | 31250 | 250 | 1250 | 310 | 202 | 375 | 345 | 12 | 18 | 240 | 5 | 204 | 2.5 | 28.5 | 3 | 91 | 1200 | |
150 | 70000 | 180 | 980 | 400 | 246 | 485 | 445 | 12 | 22 | 310 | 5 | 249 | 2.5 | 31 | 4 | 186 | 1350 | |
200 | 175000 | 120 | 750 | 520 | 326 | 625 | 565 | 18 | 26 | 400 | 5 | 328 | 3 | 40 | 5 | 425 | 4200 | |
250 | 287500 | 100 | 620 | 610 | 396 | 740 | 680 | 20 | 33 | 480 | 5 | 398 | 3 | 45 | 5 | 680 | 6500 | |
ALM..F2D2 ALM..F4D2 | 25 | 388 | 1100 | 2800 | 90 | 60 | 118 | 104 | 4 | 6.6 | 68 | 3 | 62 | 0.5 | 10.5 | 1 | 2.7 | 41 |
30 | 588 | 1000 | 2500 | 100 | 68 | 128 | 114 | 6 | 6.6 | 75 | 3 | 70 | 0.5 | 11.3 | 1 | 36.65 | 64 | |
35 | 838 | 900 | 2400 | 110 | 74 | 138 | 124 | 6 | 6.6 | 80 | 3.5 | 76 | 1 | 11.8 |
| 4.7 | 76 | |
Notes:
1) T max = 2 × T KN
2) Inner race overruns
3) Outer race overruns
Mounting Example










Q: Why do we choose your company?
A: Quality is the soul of an enterprise. We can provide you with good-quality one way clutches also with good price.
Q: What is the delivery time?
A: For small quality or samll size of clutches, we can deliver upon receiving advance.
For large quantity or large size, we have to produce 10-15 working days.
Q: Can you supply with sample clutch?
Of course! We can provide with a sample to your checking quality.
Q: What is the warranty period of the clutches?
One-year Guarantee.
New products from manufacturers at wholesale prices