FNR 55 RINGSPANN

Brand - RINGSPANN
Part Number - FNR 55 RINGSPANN
Category - Internal Freewheels FNR

Principal Dimensions & Specifications (Metric):
Nominal Torque (M_N) - 2000 Nm
Maximum Speed Inner Ring Freewheels/Overruns - 900 RPM
Maximum Speed Outer Ring Freewheels/Overruns - 1900 RPM
Bore Diameter (d) - 55 mm
Dimension (B) - 80 mm
Dimension (D) - 140 mm
Dimension (E) - 75 mm
Dimension (F) - 115 mm
Dimension (N) - 18 mm
Dimension (P) - 9 mm
Weight - 6.8 kg

Other salient points to be noted:
• The maximum transmissible torque is 2 times the specified nominal torque
• An oil lubrication of the specified quality must be provided

Features:
• Internal Freewheels FNR are roller freewheels with integrated bearing support
• Sizes 8 to 20 are equipped with sleeve bearings
• Sizes 25 to 60 feature ball bearings, which allow for higher speeds during freewheeling operation
• The freewheel is designed to be integrated into the customer housing, enabling compact and space-saving installation
• Handles nominal torques up to 3,000 Nm
• Available with bores up to 60 mm

Application as: Backstop, Overrunning Clutch, Indexing Freewheel

Application Example:
• Internal Freewheel FNR 40 is used as an indexing freewheel for an incremental drive in the feeding device of a wire processing machine
• The indexing lever is powered by a crank mechanism

Mounting:
• The housing bore tolerance (D) must conform to ISO H7 or G7 standards
• The shaft tolerance must comply with ISO h6 or j6 standards

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

♦ ♦ Images are for representation purposes only