DENTEX gear coupling technical data

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Dentex® power transmission coupling
gear couplings

	The Dentex® coupling is a flexible gear coupling whose typical features are two congruent hubs with crowned teeth which transmit torque by meshing with the internal toothing of a housing component. The coupling sleeve with axially parallel involute gearing is centred at the tooth flanks of the coupling hubs. The coupling design meets the requirement to compensate radial, angular, and axial shaft displacements in order to release the neighbouring shaft bearings from non-controlled additional bearing loads. Even with the maximum permissible displacement edge contact of the teeth is excluded and there will be no periodic variation of the angular velocity. The high internal cushioning properties of the plastic material used for the coupling sleeve reduce the effect of shock loading. Dentex® couplings are as suitable for horizontal shaft connection as they are for vertical connection, for reversing and intermittent service, and they have electrical insulating properties, a low weight, a low flywheel effect and, owing to their compactness, only little space is required for them. The steel/plastic combination also has the advantage that no lubrication by oil or grease is required; the coupling therefore does not need any maintenance.

The 6,6-polyamide used for the coupling sleeve excells due to its excellent sliding and wear resistance properties especially with the combination of toughness, hardness and rigidity; it is also resistant to condensation and splash water, engine fuels, oils, greases, alcohols, esters, ketones, aliphatic and aromatic hydrocarbons and many other agents. However, substances of strongly polar character such as concentrated mineral acids, formic acid, cresol, glycol, benzyl alcohol can dissolve 6,6-polyamide at high temperature. Maximum service reliability is guaranteed at temperatures in the range from -25°C to +80°C. It is necessary to use a coupling sleeve in heat stabilised polyamide for temperature up to 140°C.

Type	Maximum Speed (rpm)	Torque (nm)		Power (kW/rpm)		Maximum Misalignment
Type	Maximum Speed (rpm)	Normal T_kn	Maximum T_k	Normal	Maximum	Axial (mm)	Radial (mm)	Angular (mm)
B - 14	8000	10	20	0.0010	0.0021	⁺/-1	⁺/-0.3	⁺/-1°
B - 19	8000	16	32	0.0017	0.0033		⁺/-0.4
B - 24	8000	20	40	0.0021	0.0042
B - 28	8000	45	90	0.0047	0.0094
B - 32	7000	60	120	0.0063	0.0130
B - 38	6000	80	160	0.0084	0.0170
B - 42	5400	100	200	0.0100	0.0200
B - 48	5000	140	280	0.0150	0.0290
B - 55	4000	250	500	0.0260	0.0520
B - 65	3800	390	780	0.0410	0.0800		⁺/-0.6
B - 80	3000	700	1400	0.0730	0.1500		⁺/-0.7
B - 100	2400	1250	2400	0.0130	0.2500		⁺/-0.8
B3R - 24	10200	20	40	0.0020	0.0040		⁺/-0.4
B3R - 28	8300	45	90	0.0045	0.0095
B3R - 32	7000	80	160	0.0084	0.0170
B3R - 45	5000	140	280	0.0150	0.0290
B3R - 65	3800	390	780	0.0410	0.0800		⁺/-0.6
B4R - 80	3000	700	1400	0.0730	0.1500		⁺/-0.7
B4R - 100	2400	1250	2400	0.1300	0.2500		⁺/-0.8

Dentex® Couplings for IEC Standard Motors

Motor Size	Shaft D x l (mm)		n = 750 (1/min) Power P		Dentex type	T_Kmax (Nm)	n = 1000 (1/min) Power P		Dentex type	T_Kmax (Nm)	n = 1500 (1/min) Power P		Dentex type	T_Kmax (Nm)	n = 3000 (1/min) Power P		Dentex type	T_Kmax (Nm)
	1500 1/min	3000 1/min	kW	T_AN (Nm)			kW	T_AN (Nm)			kW	T_AN (Nm)			kW	T_AN (Nm)
56	9 x 20		-	-	14	20	-	-	14	20	0.06	0.4	14	20	0.09	0.3	14	20
											0.09	0.6			0.12	0.4
63	11 x 23		-	-			-	-			0.12	0.9			0.18	0.6
											0.18	1.2			0.25	0.9
71	14 x 30		-	-			-	-			0.25	1.8			0.37	1.3
											0.37	2.5			0.55	1.9
80	19 x 40		-	-	19	32	0.37	3.7	19	32	0.55	3.7	19	32	0.75	2.5	19	32
							0.55	5.5			0.75	5			1.1	3.7
90 S	24 x 50		-	-	24	40	0.75	7.9	24	40	1.1	7.5	24	40	1.5	4.9	24	40
90 L							1.1	11			1.5	10			2.2	7.4
100 L	28 x 60		0.75	11	28	90	1.5	15	28	90	2.2	15	28	90	3	9.8	28	90
			1.10	16							3	20			4	13
112 M			1.50	21			2.2	22			4	27			4	13
132 S	38 x 80		2.20	29	38	160	3	30	38	160	5.5	36	38	160	5.5	18	38	160
															7.5	25
132 M			3.00	40			4	39			7.5	49			-	-
							5.5	55
160 M	42 x 110		4.00	54	42	200	7.5	74	42	200	11	72	42	200	11	35	42	200
			5.50	74											15	49
160 L			7.50	100			11	108			15	98			18.5	60
180 M	48 x 110		-	-	48	280	-	-	48	280	18.5	121	48	280	22	72	48	280
180 L			11	147			15	147			22	144			-	-
200 L	55 x 110		15	196	55	500	18.5	185	55	500	30	195	55	500	30	97	55	500
							22	215							37	117
225 S	60 x 140	55 x 110	18.5	245	65	780	-	-	65	780	37	245	65	780	-	-
225 M			22	294			30	292			45	294			45	146
250 M	65 x 140	60 x 140	30	390			37	361			55	357			55	176	65	780
280 S	75 x 140	60 x 140	37	490	80	1400	45	440	80	1400	75	487	80	1400	75	245
280 M			45	585			55	536			90	584			90	294
315 S	80 x 170		55	715			75	730			110	714			110	350
315 M			75	970	100	2400	90	876	100	2400	132	857	100	2400	132	420
315 L			90	1170			110	1070			160	1030			160	513	80	1400
			110	1420			132	1280			200	1290			200	641

For more information and dimensions of this series of couplings see the
on-line pdf catalogue »

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