Sprag Clutch with Torque Arm Used as Backstop (FA)

• Customization: Available
• Model: Fa
• Type: Sprag
• Model NO.: FA
• Max Speed: 90-250rpm
• Bore Size: 0.984-3.150inch
• Weight: 2.-18.8lbs
• Maximum Torque: 340-3690(Lb-FT)
• Application: Low Speed Freewheeling Operations
• OEM: Accept
• Precision: P6
• Transport Package: Single Box
• Specification: P6
• Trademark: SUMA or OEM
• Origin: Changzhou
• HS Code: 84836000
• Production Capacity: 10000PCS/Year

Product Description

                                                         Sprag Clutch with Torque Arm Used as Backstop (FA)

Features
Complete Freewheels FA with torque arm are sprag freewheels with sleeve bearings. They are grease-lubricated and require no maintenance. The freewheels FA are used as:
Backstops
Indexing Freewheels
for applications with low speed freewheeling operation when used as a backstop or with a low to medium total number of actuations when used as an indexing freewheel.
In addition the standard type, two other types are available for extended service life and indexing accuracy. Maximum torques up to 3 690 lb-ft. Bores up to 3.15 inch.
Application example
Two Complete Freewheels FA 57 in the roller feed of a sheet metal processing machine. The indexing freewheel arranged on the left is driven via a bell crank with an adjustable lift. This enables an infinite setting of the feed. The backstop arranged on the right prevents the indexing rollers from running backwards while the indexing freewheel carries out its back stroke. Often, an additional small brake is provided in order to prevent the accelerated sheet metal strip from advancing.
 

Freewheel Size	Type	Maximum torque MM lb-ft	Max.speed innerring freewheel rpm	Bore d max. inch	C   inch	D   inch	E   inch	H   inch	L   inch	N   inch	Weight   Lbs
FA  37	SF	340	250	0.984	1.378	2.992	0.472	3.543	1.378	0.453	2.2
FA  57	SF	930	170	1.650	1.969	3.937	0.630	4.921	1.772	0.571	5.5
FA  82	SF	2360	130	2.360	2.362	5.512	0.709	6.299	2.362	0.827	12.2
FA 107	SF	3690	90	3.150	3.150	6.693	0.787	7.087	2.559	0.886	18.8

Mounting
When used as a backstop, the back driving torque is supported by the torque arm. The torque arm must not be clamped into position. It must have 0.002 to 0.008 inch play in the axial and radial directions. When used as an indexing freewheel, the torque arm serves as the indexing lever arm. The torque arm is not heat treated enabling the customer alter the torque arm to suit his application. The recommended tolerance of the shaft is
+ 0 / - 0.001 inch.