Complete Freewheels Backstop Clutch FR
Complete Freewheels FR … are sealed sprag freewheels in inch dimension with ball bearings. They are supplied oil-filled and ready for installation.
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Features
Complete Freewheels FR … are sealed sprag
freewheels in inch dimension with ball bearings.
They are supplied oil-filled and ready for instal-
lation.
The freewheels FR … are used as:
➧ Backstops
➧ Overrunning Clutches
➧ Indexing Freewheels
In addition to the standard type, three other
types are available for extended service life.
Nominal torques up to 27 500lb-ft.
Bores up to 7 inch. Many standard bores are
available.
Application example
Complete Freewheels FRS 600 in both drive units of a transport system with a conveyor belt that moves both forward and backward (rever-sible operation). In order to ensure that the con-veyor belt is moved under tension, forward movement is driven by drive unit I, reverse mo-vement by drive unit II. The freewheels automa-tically disengage the respective non workingdrive, eliminating the need for expensive exter-nal clutches or brakes.
For forward movement, drive unit II is started in freewheeling direction of freewheel II; free -wheel II is in freewheeling operation and disen-gages drive unit II from the conveyor belt.Afterwords drive unit I is started in the locking direction of the freewheel I; freewheel I is in dri-ving operation and the conveyor belt is movedforward by drive unit I. The speed of drive unit Iis lower than that of drive unit II. Thus freewheelII remains in freewheeling operation and driveunit II is not improperly engaged.
For reverse movement, the drive units are started in reverse order and direction of rota-tion at the corresponding speeds.
Mounting
The customer attachment part is centered on the external diameter D and then bolted on to the face.
The tolerance of the shaft must be + 0 / - 0,001 inch and the tolerance of the pilot diameter D of the attachment part must be - 0 / + 0,002 inch.
The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.
Freewheel Size | Bo | re d es | max. inch | D | F inch | G | L inch | H | O | T inch | Z* | Weight | |||||||
FR … 300 | 0,500 | 0,650 | 0,750 | 0,750 | 3,000 | 0,063 | 0,250-28 | 2,500 | 0,375 | 0,750 | 2,625 | 4 | 3,5 | ||||||
FR … 400 | 0,500 | 0,625 | 0,750 | 0,875 | 1,000 | 1,125 | 1,125 | 3,500 | 0,032 | 0,312-24 | 2,750 | 0,500 | 0,750 | 2,875 | 4 | 6,0 | |||
FR … 500 | 0,875 | 1,000 | 1,125 | 1,250 | 1,312 | 1,312 | 4,250 | 0,063 | 0,312-24 | 3,500 | 0,625 | 1,000 | 3,625 | 4 | 10,0 | ||||
FR … 550 | 1,250 | 1,312 | 1,500 | 1,625 | 1,625 | 4,750 | 0,063 | 0,312-24 | 3,250 | 0,540 | 0,750 | 4,250 | 6 | 12,0 | |||||
FR … 600 | 1,250 | 1,375 | 1,438 | 1,500 | 1,625 | 1,688 | 1,750 | 1,938 | 2,000 | 2,000 | 5,375 | 0,063 | 0,312-24 | 3,750 | 0,625 | 1,000 | 4,750 | 6 | 19,0 |
FR … 650 | 1,938 | 2,000 | 2,250 | 2,438 | 2,500 | 2,500 | 6,500 | 0,063 | 0,375-24 | 3,500 | 0,750 | 1,000 | 5,750 | 8 | 24,0 | ||||
FR … 700 | 1,938 | 2,000 | 2,250 | 2,438 | 2,500 | 2,750 | 2,938 | 2,938 | 7,125 | 0,063 | 0,375-24 | 5,000 | 0,750 | 1,000 | 6,250 | 8** | 42,0 | ||
FR … 750 | 2,438 | 2,500 | 2,938 | 3,000 | 3,250 | 3,438 | 3,438 | 8,750 | 0,063 | 0,500-20 | 6,000 | 0,875 | 1,250 | 7,000 | 8** | 83,0 | |||
FR … 775 | 2,750 | 2,938 | 3,000 | 3,250 | 3,438 | 3,500 | 3,750 | 3,750 | 9,750 | 0,063 | 0,500-20 | 6,000 | 0,875 | 1,250 | 8,500 | 8 | 96,0 | ||
FR … 800 | 3,000 | 3,250 | 3,438 | 3,500 | 3,750 | 3,937 | 4,000 | 4,250 | 4,500 | 4,500 | 10,000 | 0,063 | 0,500-20 | 6,000 | 0,875 | 1,250 | 8,937 | 8 | 102,0 |
FR … 900 | 4,000 | 4,438 | 4,500 | 4,938 | 5,000 | 5,438 | 5,438 | 12,000 | 0,063 | 0,625-18 | 6,375 | 1,000 | 1,375 | 9,750 | 10 | 156,0 | |||
FR …1000 | 5,750 | 5,938 | 6,000 | 6,750 | 6,875 | 7,000 | 7,000 | 15,000 | 0,063 | 0,625-18 | 6,625 | 1,000 | 1,375 | 11,750 | 12 | 250,0 | |||
* Z = Number of tapped holes G on pitch circle T.
** Six holes are equally spaced 60° apart with two additional holes located 30° from the six equally spaced holes and 180° apart.
Conversion factors: 1 lb-ft= 1,35 Nm, 1 inch = 25,4 mm, 1 lbs = 0,453 kg.
Example for ordering
Freewheel size FR … 700, type with sprag lift-off
Z and 2 inch bore:
• FRZ 700, d = 2 inch
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E-mail: ellen@chinasuma.com
Mobile: 0086-18068536660
Tel: 0086-519-85858018
Fax: 0086-519 85858018
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Add: Liudao Industrial Park, YaoguanTown, Wujin District , Changzhou City , Jiangsu Province, China , 213102
