Complete Freewheels FGR R A3A4 and FGR R A2A3
Features
Complete Freewheel FGR R A2A3 and FGR R A3A4 with lever arm are sealed roller
freewheels with ball bearings. They are oil lubricated. The freewheels FGR R A3A4 have an end cover and are fitted to the shaft ends. The freewheels FGR R A2A3 are arranged on
through shafts or shaft ends. The oil filling is carried out after the freewheel has been installed.
The freewheels FGR R A2A3 and FGRR 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.
Freewheel Size | Type | Lever arm and cover combination | Nominal Torque MN Nm | Max. speed Inner ring freewheels min-1 | Bore d mm | D mm | E mm | F mm | H mm | L mm | N mm | O mm | P mm | Q mm | S mm | Weight kg |
FGR 12 | R | A2A3 | A3A4 | 55 | 2 500 | 12 | 62 | 13 | 1 | 51 | 42 | 10 | 64 | 10 | 44 | 12 | 1,4 |
FGR 15 | R | A2A3 | A3A4 | 130 | 2 200 | 15 | 68 | 13 | 1 | 62 | 52 | 10 | 78 | 10 | 47 | 12 | 1,8 |
FGR 20 | R | A2A3 | A3A4 | 180 | 1 900 | 20 | 75 | 15 | 1 | 72 | 57 | 11 | 82 | 12 | 54 | 12 | 2,3 |
FGR 25 | R | A2A3 | A3A4 | 290 | 1 550 | 25 | 90 | 17 | 1 | 84 | 60 | 14 | 85 | 16 | 62 | 12 | 3,4 |
FGR 30 | R | A2A3 | A3A4 | 500 | 1 400 | 30 | 100 | 17 | 1 | 92 | 68 | 14 | 95 | 16 | 68 | 12 | 4,5 |
FGR 35 | R | A2A3 | A3A4 | 730 | 1 300 | 35 | 110 | 22 | 1 | 102 | 74 | 18 | 102 | 20 | 76 | 12 | 5,6 |
FGR 40 | R | A2A3 | A3A4 | 1 000 | 1 150 | 40 | 125 | 22 | 1 | 112 | 86 | 18 | 115 | 20 | 85 | 13 | 8,5 |
FGR 45 | R | A2A3 | A3A4 | 1 150 | 1 100 | 45 | 130 | 26 | 1 | 120 | 86 | 22 | 115 | 25 | 90 | 14 | 8,9 |
FGR 50 | R | A2A3 | A3A4 | 2 100 | 950 | 50 | 150 | 26 | 1 | 135 | 94 | 22 | 123 | 25 | 102 | 15 | 12,8 |
FGR 55 | R | A2A3 | A3A4 | 2 600 | 900 | 55 | 160 | 30 | 1 | 142 | 104 | 25 | 138 | 32 | 108 | 18 | 16,2 |
FGR 60 | R | A2A3 | A3A4 | 3 500 | 800 | 60 | 170 | 30 | 1 | 145 | 114 | 25 | 147 | 32 | 112 | 18 | 19,3 |
FGR 70 | R | A2A3 | A3A4 | 6 000 | 700 | 70 | 190 | 35 | 1 | 175 | 134 | 30 | 168 | 38 | 135 | 17 | 23,5 |
FGR 80 | R | A2A3 | A3A4 | 6 800 | 600 | 80 | 210 | 35 | 1 | 185 | 144 | 30 | 178 | 38 | 145 | 17 | 32,0 |
FGR 90 | R | A2A3 | A3A4 | 11 000 | 500 | 90 | 230 | 45 | 1 | 205 | 158 | 40 | 192 | 50 | 155 | 17 | 47,2 |
FGR 100 | R | A2A3 | A3A4 | 20 000 | 350 | 100 | 270 | 45 | 1 | 230 | 182 | 40 | 217 | 50 | 180 | 17 | 76,0 |
FGR 130 | R | A2A3 | A3A4 | 31 000 | 250 | 130 | 310 | 60 | 1 | 268 | 212 | 55 | 250 | 68 | 205 | 18 | 110,0 |
FGR 150 | R | A2A3 | A3A4 | 68 000 | 200 | 150 | 400 | 60 | 1 | 325 | 246 | 55 | 286 | 68 | 255 | 20 | 214,0 |
Application example
Complete Freewheel FGR 45 R A3A4 as a backstop 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.
Mounting
The backdriving torque is supported by the lever arm with holding pin. The holding pin engages in a slot or bore in the frame of the machine. It must have 0,5 to 2 mm play in the axial and radial directions. If the holding pin is removed, the shaft can be turned in both directions.
In the case of freewheels FGR R A3A4, the inner ring must be secured axially with a retainer plate. The tolerance of the shaft must be ISO h6 or j6.
Example for ordering
Basic Freewheel, lever arm, cover, seals and screws are supplied loose provided nothing else
is stated in the order. Freewheel size FGR 25, standard type with lever arm A3 and cover A4:
? FGR 25 R A3A4
If assembled, oil-filled, Complete Freewheels FGR R A2A3 are to be supplied, this must be
specified in the order. When ordering, please also specify the freewheeling direction of the inner ring when viewed in direction X:
? counterclockwise free or
? clockwise free