SEPAC Stationary Field Tooth Clutches SFTC Series

Description

Stationary Field Tooth Clutches operate both dry and in oil. Sealed bearings are permanently lubricated eliminating the need for grease fittings and maintenance.

• 3 to 10.5” diameter; 2 to 7.5” length
• Bore sizes from 0.5 to 4.25”
• Static torque from 40 to 5200 lb-ft
• 1400 to 3500 RPM
• Operates both dry and in oil
• Modified designs and customized assemblies available

Performance / Mechanical Specifications	SFTC Series — Model Size
		SFTC – 320	SFTC – 375	SFTC – 450	SFTC – 525	SFTC – 630	SFTC – 760	SFTC – 895	SFTC – 1065
Torque Rating (Static)	lb-ft	40	80	160	320	650	1300	2600	5200
	(Nm)	(54.2)	(108.5)	(216.9)	(433.9)	(881.3)	(1762.6)	(3525.1)	(7050.2)
Recommended Max Speed	rpm	3500	3000	2500	2000	1600	1500	1400	1400
Body Diameter	in	3.16	3.75	4.50	5.25	6.32	7.60	8.94	10.65
	(mm)	(80.26)	(95.25)	(114.30)	(133.35)	(160.53)	(193.04)	(227.08)	(270.51)
Overall Length (ref)	in	2.07	2.33	2.61	2.94	3.55	4.23	5.04	6.18
	(mm)	(52.58)	(59.18)	(66.29)	(74.68)	(90.17)	(107.40)	(128.02)	(156.97)
Rotor Bore – Min	in	0.500	0.750	1.000	1.125	1.375	1.750	2.250	2.750
	(mm)	(12.700)	(19.050)	(25.400)	(28.575)	(34.925)	(44.450)	(57.150)	(69.85)
Rotor Bore – Max	in	1.000	1.250	1.500	1.750	2.250	2.750	3.500	4.250
	(mm)	(25.400)	(31.750)	(38.100)	(44.450)	(57.150)	(69.85)	(88.900)	(107.95)

SFTC Operation:

When current is applied to the coil in the stationary magnet body (held from rotating by an anti-rotation pin), a magnetic field is created which attracts the armature toward the rotor. As the teeth engage, torque is transmitted.

When the current is turned off, the armature slides on the splined output plate adapter. Springs pull on the armature to assist disengagement from the rotor.

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