Dynaflex LCR, LCD manual Typical Applications, Typical End Product Application

DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS Page 104 of 124

Typical Applications

Dynafl ex LCR Series Couplings are useful for a wide range of rotary drive applications, from lawn and garden tractors to large construction equipment, including U-joint replacement. Typical applications include:

Typical End Product	Application
Farm Tractor	Trouble-Free Hydraulic Pump Devices
Lawn & Garden Tractors	Maintenance-Free Main Drive Couplings
Dynamometer	Protects Driveline from Failure
Snowmobile	Reliable Main Drive Coupling
Vibratory Rollers	Absorbs High Torsional Shock Loads in
	Eccentric Drive Units
On- & Off-Highway	Isolates and Protects Vehicles Auxiliary
	Driveline Systems
Industrial Machinery	Provides Inexpensive Coupling for
	Maximum Angular Misalignment and
	Vibration Control
Agriculture Equipment	Replaces Conventional Universal Joints
	and Provides Torsional Flexibility

Dynafl ex LCR Series Couplings were designed and developed by LORD and have been in service since the early 1960s. The basic concept was intended for specifi c applications requiring low-cost, fl exible couplings to accommodate all forms of misalignment and provide torsional resilience.

The coupling design incorporates metal inserts bonded in an elastomeric ring, which loads the fl exing element in compression to transmit torque. Misalignment motion is accommodated by defl ecting the elastomer in shear, which allows extreme misalignment without high reaction forces.

They are ideally suited for light-duty elastomeric universal joints, particularly where noise reduction or shock attenu- ation is required.

Absence of metal-to-metal contact through the coupling eliminates the need for lubrication and maintenance, while also reducing noise transmissions. Installation

is accomplished by insertion between simple parallel

flanges. This lightweight coupling element can be arranged in a single or double series confi guration to match specifi c torsional stiffness and misalignment requirements.

Static Load Deflection Characteristics of LCR-300-600-046A Reference Curve

Ring-type couplings isolate torsional vibration and reduce the harmful effects of torsion shock. Torsional resilience is one important characteristic. Figure 1 shows the torsional spring rate.

Accommodating axial misalignment along the axis of shafts without high reaction forces is a unique feature of ring couplings. Figure 2 shows this load defl ection relationship.

Ring-type couplings accommodate parallel misalign- ment with relatively low radial reaction forces imposed on driving and driven equipment. Figure 3 shows typical radial load defl ection curves. Load defl ection charac- teristics for other LCR couplings are available upon request.

Figure 1 – Typical Load/Deflection Curves

2500

	2000	LCR-300-600-046A
		Torque Rating
-in)	1500	1440 lb-in
(lb
Torque	1000
	500
	0
	0	2	4		6	8	10	12
			Typical Angle (deg)
Figure 2 – Axial Load Deflection Curves
	500
	400
				LCR-300-600-046A
	300
(lb)
Load	200
	100
	0
	0	0.1	0.2		0.3	0.4	0.5	0.6

Typical Deflection (in)

Figure 3 – Typical Radial Load Deflection Curves

	1200
	1000
(lb)	800			LCR-300-600-046A
	600
Load
	400
	200
	0
		0.1	0.2		0.3	0.4	0.5	0.6
	0

A part’s listing in this catalog does not guarantee its availability.	Typical Load Deflection (in)
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf.	Rev.1 10/08