Gear Couplings TNZ ZCA / TNZ ZCB

Standard hubs

The RINGFEDER^® TNZ ZCA coupling is a torsionally stiff gear coupling designed to have some backlash and consists of two coupling halves that are connected by ﬁtted bolts.

Unlike the TNZ ZCA coupling, the RINGFEDER^® TNZ ZCB comes with a bolt-on O-ring carrier which facilitates installation by changing the mounting sequence. For mounting the coupling, unscrew the cover and place it on the shaft. Mount the hub onto the shaft, slide the sleeve onto the hub and fasten the O-ring carrier to the sleeve. This way of mounting is advantageous when large couplings are involved.

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Technical Data & CAD Models

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Größe/Size	Bezeichnung / Identifier ZCA	T_KN Nm	n_max 1/min	d_1kmin mm	d_1kmax mm	D₁ mm	D₆ mm	L mm	L_I2 mm	Gw_sb kg
69	XC2106	1750	6000	12	50	111	81,5	89	93	4,1
85	XC2108	2750	4600	18	60	152	103,5	103	113	8,7
107	XC2110	5500	4200	28	75	178	127,5	127	149	14,4
133	XC2113	8500	4000	40	95	213	156	157	171	25,6
152	XC2115	13500	3850	50	110	240	181	185	223	37,3
179	XC2117	22000	3700	60	130	280	209	216	258	58,9
209	XC2120	35000	3200	70	155	318	245,5	246	298	88,6
234	XC2123	43000	2900	85	170	346	274	278	336	116,1
254	XC2125	68000	2600	95	190	389	307	308	392	166,0
279	XC2127	82000	2300	110	210	425	334,5	358	448	219,2
305	XC2130	150000	2100	120	230	457	366	388	488	265,9
355	XC2135	195000	1800	130	270	527	423	450	574	415,8

Größe/Size	Bezeichnung / Identifier ZCA	T_KN ft-lbs	n_max rpm	d_1kmin inch	d_1kmax inch	D₁ inch	D₆ inch	L inch	L_I2 inch	Gw_sb lbs
69	XC2106	1291	6000	0.472	1.969	4.370	3.209	3.504	3.661	9.0
85	XC2108	2028	4600	0.709	2.362	5.984	4.075	4.055	4.449	19.2
107	XC2110	4057	4200	1.102	2.953	7.008	5.020	5.000	5.866	31.7
133	XC2113	6269	4000	1.575	3.740	8.386	6.142	6.181	6.732	56.4
152	XC2115	9957	3850	1.969	4.331	9.449	7.126	7.283	8.780	82.2
179	XC2117	16227	3700	2.362	5.118	11.024	8.228	8.504	10.157	129.9
209	XC2120	25815	3200	2.756	6.102	12.520	9.665	9.685	11.732	195.4
234	XC2123	31716	2900	3.346	6.693	13.622	10.787	10.945	13.228	256.0
254	XC2125	50155	2600	3.740	7.480	15.315	12.087	12.126	15.433	366.0
279	XC2127	60481	2300	4.331	8.268	16.732	13.169	14.094	17.638	483.2
305	XC2130	110636	2100	4.724	9.055	17.992	14.409	15.276	19.213	586.1
355	XC2135	143826	1800	5.118	10.630	20.748	16.654	17.717	22.598	916.7

Images & Drawings

Product Characteristics

General features

Torsionally rigid gear coupling made of high-quality steel
Very compact design results in a high-power density
Compensates for angular, radial and axial shaft offset
Suitable for use in temperatures up to +120 °C if special seals are used
Available with split sleeve (ZCA / ZCB - ZCA model range also available in ZCB design) and single-piece sleeve (ZCH)
The elastic O-Ring can be replaced without having to move the coupled machines
Bores up to 270 mm
Torques up to T_Kn = 195,000 Nm / T_Kmax = 390,000 Nm
Speeds up to n_max = 6,000 rpm

General description

The RINGFEDER^® TNZ coupling is a torsionally rigid twin cardanic gear coupling.

Toothing

The coupling housings have a straight internal toothing whilst the hubs have an external toothing with a chased variable radius. As a result, the hubs can move spatially within the housing and thus compensate angular, radial and axial shaft misalignment of the adjoined shaft ends within specified tolerances. Depending on coupling type and size, the standard toothing permits an angular misalignment of up to 0.5 degrees per toothing-plane and an axial movement of several millimetres. The max. possible radial shaft displacement is dependent on the distance between the two toothing planes. Other toothing geometries can be used for further specific applications.

Materials

High-grade tooth profiles and grease with ultra high-pressure additives guarantee low-restoring forces and a long serviceable life. The material used is forged steel with an apparent yielding point of at least 335 N/mm². Special materials can be used for further specific applications. Sealing is carried out using O-Rings of synthetic rubber. The housings are centred and held together by fit-bolts and self-locking nuts.

Temperature

The use of special seals permits the temperature limit to be raised to 120 °C.

Balance

At peripheral speeds upwards of 30 m/s it is advisable to dynamically balance the coupling.

Special applications

If greater misalignments are anticipated at higher speeds and torques, an examination is necessary, performed with the assistance of a special computing programme. This is independent of the determined size. The value T_Kmax may not be exceeded in any state of operation (start-up, electrical short circuit, blocking, etc.).