FSN 80 RINGSPANN

Brand - RINGSPANN
Part Number - FSN 80 RINGSPANN
Category - Internal Freewheels FSN

Principal Dimensions & Specifications (Metric):
Nominal Torque (M_N) - 3000 Nm
Maximum Speed Inner Ring Freewheels/Overruns - 500 RPM
Maximum Speed Outer Ring Freewheels/Overruns - 900 RPM
Bore Diameter (d) - 80* mm
Dimension (B) - 58 mm
Dimension (D) - 170 mm
Dimension (E) - 95 mm
Dimension (F) - 140 mm
Dimension (N) - 20 mm
Dimension (P) - 7.5 mm
Weight - 6 kg

Other salient points to be noted:
• The maximum transmissible torque is 2 times the specified nominal torque
• Keyway connection on the outer ring with rollers

* Keyway according to DIN 6885

Features:
• Internal Freewheels FSN are roller freewheels designed without bearing support
• Designed to handle nominal torques up to 3,000 Nm
• Available with bores up to 80 mm

Application as: Backstop, Overrunning Clutch, Indexing Freewheel

Application Example:
• Internal Freewheel FSN 50 is used as a backstop, installed at the end of the intermediate shaft of a spur gearbox in an elevator drive system
• In the event of a motor stop, the freewheel ensures that the elevator remains securely held in position

Mounting:
• Internal Freewheels FSN are supplied without bearing support
• The housing bore tolerance (D) must meet ISO H7 or G7 standards
• The shaft tolerance must comply with ISO h6 or j6

Lubrication:
• An oil lubrication of the specified quality must be provided

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