Rotating Field Tooth Clutch

RFTC Series

Rotating Field Tooth Clutch

  • 3.1″ to 9.7″ diameter; 1.4″ to 4.75” length
  • Bore sizes from 0.8″ to 2.7″
  • Static torque from 40 to 5200 lb-ft
  • 2500 to 8000 RPM max speed
  • Operates both dry and in oil
  • Modified designs and customized assemblies available
Performance / Mechanical Specifications RFTC Series — Model Size
RFTC - 320 RFTC - 375 RFTC - 450 RFTC - 525 RFTC - 630 RFTC - 760 RFTC - 895 RFTC - 1065
STP File Model
Model: RFTC - 320
Model: RFTC - 375
Model: RFTC - 450
Model: RFTC - 525
Model: RFTC - 630
Model: RFTC - 760
Model: RFTC - 895
Model: RFTC - 1065
Model:
Torque Rating (Static) lb-ft
Model: RFTC - 320
40
Model: RFTC - 375
80
Model: RFTC - 450
160
Model: RFTC - 525
320
Model: RFTC - 630
650
Model: RFTC - 760
1300
Model: RFTC - 895
2600
Model: RFTC - 1065
5200
Model:
(Nm)
Model: RFTC - 320
(54.2)
Model: RFTC - 375
(108.5)
Model: RFTC - 450
(216.9)
Model: RFTC - 525
(433.9)
Model: RFTC - 630
(881.3)
Model: RFTC - 760
(1762.6)
Model: RFTC - 895
(3525.1)
Model: RFTC - 1065
(7050.2)
Model:
Recommended Max Speed rpm
Model: RFTC - 320
8000
Model: RFTC - 375
7500
Model: RFTC - 450
7000
Model: RFTC - 525
6500
Model: RFTC - 630
6500
Model: RFTC - 760
4500
Model: RFTC - 895
3500
Model: RFTC - 1065
2500
Model:
Body Diameter in
Model: RFTC - 320
3.06
Model: RFTC - 375
3.46
Model: RFTC - 450
4.13
Model: RFTC - 525
4.81
Model: RFTC - 630
5.78
Model: RFTC - 760
7.00
Model: RFTC - 895
8.22
Model: RFTC - 1065
9.70
Model:
(mm)
Model: RFTC - 320
(77.72)
Model: RFTC - 375
(87.88)
Model: RFTC - 450
(104.90)
Model: RFTC - 525
(122.17)
Model: RFTC - 630
(146.81)
Model: RFTC - 760
(177.80)
Model: RFTC - 895
(208.79)
Model: RFTC - 1065
(246.38)
Model:
Overall Length (ref) in
Model: RFTC - 320
1.41
Model: RFTC - 375
1.62
Model: RFTC - 450
1.92
Model: RFTC - 525
2.25
Model: RFTC - 630
2.70
Model: RFTC - 760
3.14
Model: RFTC - 895
3.94
Model: RFTC - 1065
4.75
Model:
(mm)
Model: RFTC - 320
(35.81)
Model: RFTC - 375
(41.45)
Model: RFTC - 450
(48.77)
Model: RFTC - 525
(57.15)
Model: RFTC - 630
(68.58)
Model: RFTC - 760
(79.76)
Model: RFTC - 895
(100.08)
Model: RFTC - 1065
(120.65)
Model:
Mounting Adapter Bore – Min in
Model: RFTC - 320
1.000
Model: RFTC - 375
1.000
Model: RFTC - 450
1.250
Model: RFTC - 525
1.375
Model: RFTC - 630
1.625
Model: RFTC - 760
2.000
Model: RFTC - 895
2.500
Model: RFTC - 1065
2.750
Model:
(mm)
Model: RFTC - 320
(25.400)
Model: RFTC - 375
(25.400)
Model: RFTC - 450
(31.750)
Model: RFTC - 525
(34.925)
Model: RFTC - 630
(41.275)
Model: RFTC - 760
(50.800)
Model: RFTC - 895
(63.500)
Model: RFTC - 1065
(69.850)
Model:
Mounting Adapter Bore – Max in
Model: RFTC - 320
1.690
Model: RFTC - 375
2.000
Model: RFTC - 450
2.340
Model: RFTC - 525
2.760
Model: RFTC - 630
3.320
Model: RFTC - 760
4.120
Model: RFTC - 895
5.000
Model: RFTC - 1065
5.875
Model:
(mm)
Model: RFTC - 320
(17.5260)
Model: RFTC - 375
(50.800)
Model: RFTC - 450
(59.436)
Model: RFTC - 525
(70.104)
Model: RFTC - 630
(84.328)
Model: RFTC - 760
(104.648)
Model: RFTC - 895
(127.000)
Model: RFTC - 1065
(149.225)
Model:

RFTC Operation:

With the rotating field design, the magnet body rotates with the machine shaft. Power is supplied through electrical brush contacts and slip rings. When current is applied to the coil, a magnetic field is created attracting the armature to the magnet. As the teeth engage, torque is transmitted.

“When the current is turned off, the armature slides on the splined output plate adapter to disengage from the magnet body. Springs pull on the armature to assist.”