Dynaflex LCD Dynaflex Elastomeric Flexible Couplings Page 101, Parallel Arrangement Selection

DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS Page 101 of 124

Dynaflex Bushing-Type Couplings

Table 1 – Parallel Arrangement Selection

		2		lb/in
BUSHING COUPLING SELECTION	Torsional Rate: Kθ = NR		KR	(____)
				rad
Curves Based on Compression	Torque: T = σc • N • R • d • l (lb/in)
Stress σc = 200 psi	Where: σc = Comp. Stress (psi)			d = joint l.M., O.D.
	N = No. of Joints			l = Socket Length

R = Bolt Circle Radius

	12		N = 2		3	4	5	6		7		8		9			10		11
																			12
	10
(in)																	J-5915-58
	8
Circle	6									J-5737-1				RMIN =		r
															Sin ( 180˚N )
Bolt							J-6250-2							Where r = radius of rubber joint
	4
								KR
							Joint				Minimum B.C. Dia. "D" For Number of Joints
					DIAMETER		Number	lb/in	2	3	4	5	6	7	8	9	10	11	12
	2			CIRCLE			J-6250-1†	6,800	1.25	1.43	1.77	2.13	2.50	2.89	3.27	3.68	4.05	4.45	4.85
			BOLT
							J-5915-58 †	12,000	2.50	3.00	3.54	4.26	5.00	5.76	6.52	7.32	8.08	8.90	9.68
		MINIMUM
	0
	J-6250-2	4	8	12	16	20	24	28	32		36	40		44		48		52	56
	J-5915-58	15	30	45	60	75	90	105	120	135		150		165		180		195	210
	Bushing Part No.						Torque (lb/in x 100)									† Non-Stock Item

Table 2 – Series Arrangement Selection

Bolt Circle (in)

12

10

8

6

4

BUSHING COUPLING SELECTION — N x N SERIES Curves Based on Compression

Stress σc = 200 psi

(N x N) 2 x 2 3 x 3 4 x 4 5 x 5 6 x 6

	DIAMETER
BOLT	CIRCLE

MINIMUM

9 x 9

8 x 8

7 x 7

10 x 10

-58

5915

J-

-1

12 x 12

J-5737

-2

J-6250

Torsional Rate: K

=

N

R

2

K

( lb/in )

θ

2

R rad

N

Torque: T = σc •

R • d • l (lb/in)

2

Where: σc = Comp. Stress (psi)

d = joint l.M., O.D.

N = No. of Joints

l = Socket Length

R = Bolt Circle Radius

2

		r		Joint	KR			Minimum B.C. Dia. "D" For Number of Joints
RMIN	=	180º		Number	lb/in	2	3	4	5	6	7	8	9	10	11	12
	Sin (	N	)	J-6250-1	6,800	1.77	2.50	3.27	4.05	4.85	5.62	6.41	7.20	8.00	8.78	9.62
Where: r = radius of rubber joint				J-5915-58	12,000	3.54	5.00	6.52	8.08	9.68	11.25	12.81	14.40	15.98	17.59	19.15

0

J-6250-2	4	8	12	16	20	24	28	32	36	40	44	48	52	56
J-5915-58	15	30	45	60	75	90	105	120	135	150	165	180	195	210
Bushing Part No.						Torque (lb/in x 100)
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf.														Rev.1 10/08