Disc coupling: by definition, transmits torque from a driving to a driven bolt tangentially on a common bolt circle. Torque is transmitted between the bolts through a series of thin, stainless steel discs assembled in a pack. Misalignment is accomplished by deforming of the material between the bolts.

A disc coupling is a high performance motion control (Servo) coupling designed to be the torque transmitting element (by connecting two shafts together) while accommodating for shaft misalignment. It is designed to be flexible, while remaining torsionally strong under high torque loads. Typically, disc couplings can handle speeds up to 10,000 RPM.

There are two different styles of disc coupling:

Single Disc Style couplings are composed of two hubs (the ends of the coupling, which are typically made from aluminum, but stainless steel is used as well) and a single, flat, stainless steel disc spring

Double Disc Style coupling is also composed of two hubs, but has an additional center spacer sandwiching two disc springs. The center spacer can be made out of the same material as the hubs, but is sometimes available in insulating acetal, which makes the coupling electrically isolating.

The difference between the two styles is that single disc couplings cannot accommodate parallel misalignment due to the complex bending that would be required of the lone disc. Double disc styles allow the two discs to bend in opposite directions to better manage parallel offset. The discs are fastened to the hubs (and center spacer on double disc styles) with tight fitting pins that do not allow any play or backlash between the disc and the hubs. The discs can be bent easily and as a result, disc couplings have some of the lowest bearing loads available in a motion control coupling.

Torsionally stiff and still flexible, disc couplings are a great solution for high speed applications. The downside is that they are more delicate than the average coupling and can be damaged if misused. Special care should be taken to ensure that misalignment is within the ratings of the coupling.

Advantages of disc coupling

1.  Eliminates the need for lubrication and coupling maintenance

2.  Coupling can be inspected without disassembly

3.  Condition of disc packs can be inspected with a strobe light while the machine is running

4.  Note: It is not recommended that couplings be operated without coupling guards.

5.  Easy to assess equipment misalignment

6.  Torsionally rigid without any backlash

7.  No wearing parts

8.  Resistance to harsh environments

9.  Long life when properly sized and aligned

10. High power density (higher torque for a given outside diameter)

TAL series  

• Suitable for middle/low speed, long spacer distance applications
• Simple structure, easy mounting and dismounting, small dimensions, light weight, high torque
• Absorb larger misalignments, low noise, long service life, maintenance free
• Apply to pumps, fans, rolling mill, etc.

 

 

 

                    

Fundamental dimensions:

Model NO.	Power/Speed (Kw/rpm)	Nominal torque (KNm)	Peak torque (KNm)	Max speed (r/min)	A (mm)	B (mm)	C max (mm)	E(mm)	F (mm)	L(mm)
TAL6115	0.072	0.68	2.4	15000	115	74	50	110	55	220
TAL6135	0.16	1.52	3.3	12000	135	94	65	110	70	250
TAL6152	0.22	2.1	6.1	11000	152	107	75	120	80	280
TAL6175	0.39	3.7	10.8	10000	175	122	85	130	90	310
TAL6196	0.49	4.6	12.4	9000	196	133	95	160	100	360
TAL6210	0.54	5.15	14.2	7500	210	147	105	160	110	380
TAL6231	0.86	8.21	24.1	6700	231	168	120	160	125	410
TAL6247	1.28	12.22	32	6200	247	182	130	160	140	440
TAL6272	2.16	20.62	45	5500	272	196	140	175	150	475
TAL8302	3.46	33	78	4700	302	224	155	195	165	525
TAL8333	4.13	39.44	101	4350	333	238	170	220	180	580
TAL8363	6.6	63	140	4200	363	260	185	250	200	650
TAL8396	8.5	81.11	197	3900	396	280	200	270	215	700
TAL8425	11	105	217	3600	425	294	210	290	230	750
TAL8457	14	133.7	320	3450	457	322	230	310	240	790
TAL8493	17	162.3	355	3300	493	352	250	320	260	840
TAL0537	25	238.75	548	3200	537	374	265	350	280	910
TAL0580	35	334.25	770	3100	580	415	290	370	305	980
TAL0630	42	401.1	920	3000	630	452	320	400	330	1060

 

Performance parameters:

 

Model NO.	Tightening torque(Nm)	Mass(Kg)	Torsional stiffness KT(Nm/radxE+06)	Moment of inertia (Kgm^2)	Performance data of spacer(per meter)			Angular misalignment		Parallel misalignment
					Mass(Kg)	Torsional stiffness ΔKT(Nm /radxE+06)	Moment of inertia (Kgm^2)	Max θmax (deg)	Angular stiffness (Nm/radxE+03)	Max(mm)	Axial force （N）
TAL6115	45	4.5	0.412	0.0072	4.7	0.00389	0.00612	0.375	105.4	2	902
TAL6135	45	6.7	0.72	0.014	6.0	0.099	0.013	0.375	113.6	2.3	1056
TAL6152	45	10.3	1.163	0.028	6.9	0.158	0.021	0.375	148.3	2.4	1368
TAL6175	85	15.6	1.695	0.058	10.4	0.289	0.035	0.375	160.3	2.6	2100
TAL6196	160	21.3	2.563	0.08	11.8	0.455	0.047	0.375	198.6	2.8	2306
TAL6210	160	31.2	2.988	0.19	13.5	0.702	0.085	0.375	203.5	3.0	3256
TAL6231	160	32.2	3.596	0.24	15.1	0.836	0.129	0.375	382.8	3.1	3654
TAL6247	160	42.8	6.420	0.32	22.6	1.536	0.172	0.375	425.8	3.3	3946
TAL6272	280	55.6	6.852	0.5	26.5	2.03	0.216	0.375	510.4	3.5	4653
TAL8302	280	68.2	12.856	0.72	39.5	2.76	0.444	0.25	1989	2.8	6542
TAL8333	340	104.3	17.63	1.51	46.3	5.422	0.522	0.25	2653	3.0	9326
TAL8363	540	135.2	23.956	2.2	51.2	7.032	0.755	0.25	3456	3.3	12681
TAL8396	540	175.2	32.85	3.3	56.1	8.865	0.923	0.25	7864	3.4	13653
TAL8425	800	220.1	43.963	5.2	71.5	14.65	1.101	0.25	6859	3.6	15782
TAL8457	800	278.2	55.63	7.9	87.3	16.83	1.522	0.25	6971	3.8	16524
TAL8493	800	320.2	62.356	9.6	94.6	21.32	2.11	0.25	7865	4.0	18936
TAL0537	1200	422.3	100.54	17.1	105.3	25.66	2.56	0.165	37698	4.0	18635
TAL0580	1200	582.2	133.45	26.5	136	40.37	4.03	0.165	45632	4.6	19886
TAL0630	1800	640.2	150.78	32.6	147	50.8	5.07	0.165	48265	5.2	23687