X Series Flexible Couplings

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Since 1958

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We manufacture single piece Flexible Couplings, U-Joints, Machined Springs, and Power Transmission Couplings utilizing HELI-CAL^® Flexure technology

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Selection Chart for "Very Stiff" HELI-CAL X-Series Flexible Couplings

Bore Diameter (+0.05/-.00 mm)		Performance Data			Basic Model Number	Dimensional Information		Inertia¹	Attachment Metric Cap Screws		Weight
min (mm)	max (mm)	Torque Rating (Nm)	Torsional Stiffness (Deg/Nm)	Parallel Offset (mm)		OD (mm)	L (mm)	X 10^-4 (kgcmsec^²)	Size	Seating Torque (Nm)	(grams)
3.00	6.00	0.30	1.13	0.10	XCA15	15²	24	.028	M2.50-45	1.1	9.2
4.00	8.00	0.50	0.46	0.10	XCA20	20³	28	0.11	M3-.5	2.0	20
6.00	10.00	1.00	0.22	0.15	XCA25	25	30	0.30	M3-.5	2.0	33
9.00	12.70	2.00	0.13	0.15	XCA30	30	38	0.78	M4-.7	4.7	60
10.00	17.00	5.00	.066	0.20	XCA40	40	60	3.9	M5-.8	9.5	177
12.00	22.23	10.00	.029	0.20	XCA50	50	65	10.5	M6-1.0	16	306

Helical X Series, Stainless Steel, Technical Data

Bore Diameter (+0.05/-.00 mm)		Performance Data			Basic Model Number	Dimensional Information		Inertia¹	Attachment Metric Cap Screws		Weight
min (mm)	max (mm)	Torque Rating (Nm)	Torsional Stiffness (Deg/Nm)	Parallel Offset (mm)		OD (mm)	L (mm)	X 10^-4 (kgcmsec^²)	Size	Seating Torque (Nm)	(grams)
3.00	6.00	0.30	0.31	0.10	XCS15	15*	24	.078	M2.50-.45	1.1	26
4.00	8.00	0.50	0.12	0.10	XCS20	20**	28	0.32	M3-.5	2.0	57
6.00	10.00	1.00	.081	0.15	XCS25	25	30	0.84	M3-.5	2.0	95
9.00	12.70	2.00	.048	0.15	XCS30	30	38	2.2	M4-.7	4.7	172
10.00	17.00	5.00	.024	0.20	XCS40	40	60	10.7	M5-.8	9.5	508
12.00	22.23	10.00	.011	0.20	XCS50	50	65	29	M6-1.0	16	879

HOW TO ORDER

X Series Flexible Couplings · Standard Coupling Guide · Home


	901 W. McCoy Lane · P.O. Box 1069 · Santa Maria, CA 93456-1069 Phone: 805-928-3851 · Fax: 805-928-2369 sales@heli-cal.com · engineering@heli-cal.com
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