Lovejoy LF Series LF50 Model 2 Coupling RSB x RSB BE

Specifications

Description	LF50 MDL2 RSB X RSB BE
Coupling Size	LF50
Type	Complete Coupling
Material	High Temperature Rubber (HTR)
Weight	33.16 lb
Color	Metallic
Bore Type	Rough Stock Bore
Connection Type A x B	Rough Stock Bore x Rough Stock Bore
Coupling Type	Torsional

SKU: B013T0PG88 Categories: Couplings, Couplings, Collars & Universal Joiners, Flexible Couplings, Spider Tags: coupling, lovejoy

Description

Lovejoy LF Series LF50 Model 2 Coupling RSB x RSB BE

Dimensional Data

Set Screw Size	M16
Outside Diameter	7.870 in 199.90 mm
Overall Length	5.51 in 139.95 mm
Dimension BE	0.310 in 8.00 mm
Dimension ER	1.990 in 50 mm
Dimension R	0.980 in 25.00 mm
Length thru Bore	2.600 in 66.00 mm
Min. Bore (Dimensions ID1/ID2)	0.810 in
Flange Diameter (Dimension FD)	5.510 in 140.00 mm
Dimension HD	3.940 in 100.00 mm
Axial Hole and Division	4 at 90º
Cubic inches	341.27232 in³

Performance Data

Operating Temperature Range	-40 to 194 ºF
Nominal Torque	6200.00 in·lb
Max. Torque	18600.00 in·lb
Allowable Continuous Vibratory Torque	2650.00 in·lb
Max. Speed	4000 rpm
Max. Angular Misalignment	3.00 º
Max. Parallel Misalignment	0.080 in 2.00 mm
Wind-Up Angle at Nominal Torque	3.00 º
Wind-Up Angle at Max. Torque	7.50 º
Dynamic Torsional Stiffness	168100.00 in·lb/rad
Static Angular Stiffness	230.00 in·lb/deg
Static Axial Stiffness	3700.00 lb/in
Static Radial Stiffness	12600.00 lb/in
Shore Hardness	60A

Torsional Element Specifications

There are two different rubber element materials available, High Temperature Rubber (HTR) and Neoprene (CR).

Both elements are torsionally soft and are placed into compression during assembly. Rubber under compression can carry up to 5 times the amount of torque as non-compressed elements.

The elements effectively accommodate shock, misalignment, and vibration plus minimize harmful radial and axial forces on the connected equipment.

Neoprene (CR) is used in environments that are hostile to High Temperature Rubber (HTR).

50, 60 (Shore A scale)

HTR: -40° to 194° F
CR: -40° to 175° F

Up to 3°

Features

Wide range of standard designs and materials
Application versatility
Shaft to shaft or flywheel to shaft designs
Designed to accommodate substantial shock loads, vibration, and misalignment
Low moment of inertia
Electrically insulating
No lubrication, maintenance free
Unique air-flow cooling design
Different element stiffness values allow for torsional tuning of applications with diesel engines
Economic design allows for cost effective solutions for torsional applications
Proven L-LOC spline-clamping hub virtually eliminates spline shaft profile wear and “fretting”
Oil, heat, and corrosion resistant elements (Hytrel®, Zytel®)
When used with S-bolts, the coupling can accommodate some end float
S-bolts accommodate applications requiring “blind” assembly
Model 6 unique spacer designs span gaps between equipment in excess of the normal equipment separation
Model 6 design available with bearings for high speeds and large amounts of equipment separation

Model Specifications

Model 2 and 2/S

Model 2/S allows the drive package to be “blind” connected. As with all S-Style models, axial end float of equipment shafts can be accommodated without harmful push-pull force.