Features
Complete Freewheel FGR … R A2A3 and FGR … R A3A4 with lever arm are sealed roller freewheels with ball bearings. They are oil lubri-cated.
The freewheels FGR … R A3A4 have an end cover and are fitted to the shaft ends.
The freewheels FGR … R A2A3 are arranged onthrough shafts or shaft ends.
The oil filling is carried out after the freewheelhas been installed.
The freewheels FGR … R A2A3 and FGR…R
A3A4 are used as:
➧ Backstops
for applications with low to medium speed
freewheeling operation.
Nominal torques up to 68 000 Nm.
Bores up to 150 mm.
Application example
Complete Freewheel FGR 45 R A3A4 as a back-stop on the opposite ends of the drive shaft of a bucket conveyor. In the case of a motor stop,the bucket conveyor must be held securely so that the conveyor goods do not pull the belt backwards and, in doing so, drive the motor quickly. The backdriving torque is supported by the lever arm with holding pin on the housing.If the holding pin is removed, the belt shaft can be turned in both directions.
Type | Lever arm and cover combination | Nominal | Max. speed | Bore d | D | E | F | H | L | N | O | P | Q | S | Weight | |
R | A2A3 | A3A4 | 55 | 2 500 | 12 | 62 | 13 | 1 | 51 | 42 | 10 | 64 | 10 | 44 | 12 | 1,4 |
R | A2A3 | A3A4 | 130 | 2 200 | 15 | 68 | 13 | 1 | 62 | 52 | 10 | 78 | 10 | 47 | 12 | 1,8 |
R | A2A3 | A3A4 | 180 | 1 900 | 20 | 75 | 15 | 1 | 72 | 57 | 11 | 82 | 12 | 54 | 12 | 2,3 |
R | A2A3 | A3A4 | 290 | 1 550 | 25 | 90 | 17 | 1 | 84 | 60 | 14 | 85 | 16 | 62 | 12 | 3,4 |
R | A2A3 | A3A4 | 500 | 1 400 | 30 | 100 | 17 | 1 | 92 | 68 | 14 | 95 | 16 | 68 | 12 | 4,5 |
R | A2A3 | A3A4 | 730 | 1 300 | 35 | 110 | 22 | 1 | 102 | 74 | 18 | 102 | 20 | 76 | 12 | 5,6 |
R | A2A3 | A3A4 | 1 000 | 1 150 | 40 | 125 | 22 | 1 | 112 | 86 | 18 | 115 | 20 | 85 | 13 | 8,5 |
R | A2A3 | A3A4 | 1 150 | 1 100 | 45 | 130 | 26 | 1 | 120 | 86 | 22 | 115 | 25 | 90 | 14 | 8,9 |
R | A2A3 | A3A4 | 2 100 | 950 | 50 | 150 | 26 | 1 | 135 | 94 | 22 | 123 | 25 | 102 | 15 | 12,8 |
R | A2A3 | A3A4 | 2 600 | 900 | 55 | 160 | 30 | 1 | 142 | 104 | 25 | 138 | 32 | 108 | 18 | 16,2 |
R | A2A3 | A3A4 | 3 500 | 800 | 60 | 170 | 30 | 1 | 145 | 114 | 25 | 147 | 32 | 112 | 18 | 19,3 |
R | A2A3 | A3A4 | 6 000 | 700 | 70 | 190 | 35 | 1 | 175 | 134 | 30 | 168 | 38 | 135 | 17 | 23,5 |
R | A2A3 | A3A4 | 6 800 | 600 | 80 | 210 | 35 | 1 | 185 | 144 | 30 | 178 | 38 | 145 | 17 | 32,0 |
R | A2A3 | A3A4 | 11 000 | 500 | 90 | 230 | 45 | 1 | 205 | 158 | 40 | 192 | 50 | 155 | 17 | 47,2 |
R | A2A3 | A3A4 | 20 000 | 350 | 100 | 270 | 45 | 1 | 230 | 182 | 40 | 217 | 50 | 180 | 17 | 76,0 |
R | A2A3 | A3A4 | 31 000 | 250 | 130 | 310 | 60 | 1 | 268 | 212 | 55 | 250 | 68 | 205 | 18 | 110,0 |
R | A2A3 | A3A4 | 68 000 | 200 | 150 | 400 | 60 | 1 | 325 | 246 | 55 | 286 | 68 | 255 | 20 | 214,0 |
The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.
Keyway according to DIN 6885, page 1 • Tolerance of keyway width JS10.
Mounting | Example for ordering |
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