Lovejoy LF Series LF 250 Base Element Pack of 3

Specifications

Description	LF250 ELE HTR W/HDWR 60A DURO
Coupling Size	LF250
Coupling Type	Torsional
Material	High Temperature Rubber (HTR)
Bore Type	Element w/ Hardware
Color	Black
Weight	16.00 lb

SKU: B013T0PC64 Categories: Couplings, Couplings, Collars & Universal Joiners, Spider Tags: insert, lovejoy, spider

Description

Lovejoy LF Series LF 250 Base Element Pack of 3

68514438866, LF Series Base Element with Hardware

Dimensional Data

Thread (Dimension T)	M20
Length thru Bore	3.030 in100.00 mm
Dimension HD	6.299 in160.00 mm
Max. Bore (Dimensions ID1/ID2) – Flanged Hubs	5.000 in130.00 mm
Cubic inches	542.44393 in³

Performance Data

Normal Temperature Range	-40 to 194 ºF
Nominal Torque	26500.00 in·lb3000.00 N·m
Max. Torque	77400.00 in·lb8750.00 N·m
Allowable Continuous Vibratory Torque	11000.00 in·lb1250.00 N·m
Max. Speed	3000 rpm
Max. Angular Misalignment	2.00 º
Max. Parallel Misalignment	0.080 in2.00 mm
Wind-Up Angle at Nominal Torque	3.00 º
Wind-Up Angle at Max. Torque	7.50 º
Dynamic Torsional Stiffness	67000.00 Nm/rad
Dynamic Torsional Stiffness	592900.00 in·lb/rad
Static Angular Stiffness	600.00 in·lb/deg68.00 Nm/deg
Static Axial Stiffness	6570.00 lb/in1150.00 Nm/deg
Static Radial Stiffness	23400.00 lb/in4100.00 Nm/deg
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