Description
Brand - RINGSPANN
Part Number - BM 20 DX RINGSPANN
Category - Complete Freewheels BM
Principal Dimensions & Specifications (Metric):
Standard Bore Diameter (d) - 30 mm
Maximum Bore Diameter (d) - 30 mm
Dimension (A) - 121 mm
Dimension (D) - 105 mm
Dimension (F) - 0.75
Dimension (L) - 77 mm
Dimension (M) - 20.25 mm
Dimension (N) - 8 mm
Dimension (O) - 35 mm
Dimension (P) - 4 mm
Dimension (S) - 2.5 mm
Weight - 3.8 kg
Type - Type with Sprag Lift-off X For Extended Service Life Using Sprag Lift-off at High Speed Rotating Inner Ring (DX)
Nominal Torque (MN) - 420 Nm
Sprag Lift-off at Inner Ring Speed - 750 RPM
Maximum Speed of Inner Ring Freewheels/ Overruns - 1700 RPM
Maximum Speed of Outer Ring Drives - 300 RPM
Description of Suffix:
DX - Type with Sprag Lift-off X For Extended Service Life Using Sprag Lift-off at High Speed Rotating Inner Ring
Other salient points to be noted:
• The maximum transmissible torque is 2 times the specified nominal torque
• Tolerance of keyway width JS10
• Keyway according to DIN 6885
Features:
• Complete Freewheels BM are sealed freewheels equipped with ball bearings
• In addition to the standard version, a variant with sprag lift-off (type X) is offered for wear-free freewheeling when the inner ring rotates at high speed
• Designed to handle nominal torques up to 57,500 Nm
• Available with bores up to 150 mm
Application as: Backstop, Overrunning Clutch, Indexing Freewheel
Application Example:
• Complete Freewheel BM 60 SX is used as a backstop, positioned at the end of the intermediate shaft of a spur gearbox
• The freewheel operates without radial seal rings and is lubricated by the gearbox oil
• A radial holding pin engages with the outer ring’s keyway
Mounting:
• The shaft tolerance must conform to ISO h6 or j6
• The pilot diameter D of the attachment part must comply with ISO H7 or J7
♦ ♦ Images are for representation purposes only
Part Number - BM 20 DX RINGSPANN
Category - Complete Freewheels BM
Principal Dimensions & Specifications (Metric):
Standard Bore Diameter (d) - 30 mm
Maximum Bore Diameter (d) - 30 mm
Dimension (A) - 121 mm
Dimension (D) - 105 mm
Dimension (F) - 0.75
Dimension (L) - 77 mm
Dimension (M) - 20.25 mm
Dimension (N) - 8 mm
Dimension (O) - 35 mm
Dimension (P) - 4 mm
Dimension (S) - 2.5 mm
Weight - 3.8 kg
Type - Type with Sprag Lift-off X For Extended Service Life Using Sprag Lift-off at High Speed Rotating Inner Ring (DX)
Nominal Torque (MN) - 420 Nm
Sprag Lift-off at Inner Ring Speed - 750 RPM
Maximum Speed of Inner Ring Freewheels/ Overruns - 1700 RPM
Maximum Speed of Outer Ring Drives - 300 RPM
Description of Suffix:
DX - Type with Sprag Lift-off X For Extended Service Life Using Sprag Lift-off at High Speed Rotating Inner Ring
Other salient points to be noted:
• The maximum transmissible torque is 2 times the specified nominal torque
• Tolerance of keyway width JS10
• Keyway according to DIN 6885
Features:
• Complete Freewheels BM are sealed freewheels equipped with ball bearings
• In addition to the standard version, a variant with sprag lift-off (type X) is offered for wear-free freewheeling when the inner ring rotates at high speed
• Designed to handle nominal torques up to 57,500 Nm
• Available with bores up to 150 mm
Application as: Backstop, Overrunning Clutch, Indexing Freewheel
Application Example:
• Complete Freewheel BM 60 SX is used as a backstop, positioned at the end of the intermediate shaft of a spur gearbox
• The freewheel operates without radial seal rings and is lubricated by the gearbox oil
• A radial holding pin engages with the outer ring’s keyway
Mounting:
• The shaft tolerance must conform to ISO h6 or j6
• The pilot diameter D of the attachment part must comply with ISO H7 or J7
♦ ♦ Images are for representation purposes only
