Gear Couplings TNZ ZCAZ / TNZ ZCBZ

Standard hubs and spacer

The coupling model RINGFEDER^® TNZ ZCAZ is complemented with a spacer that is mounted between the sleeves of a TNZ ZCA coupling by using ﬁtted bolts. The spacer serves to accommodate larger distances between the shafts ends, and can be mounted and dismounted radially without having to move the connected machines.

Unlike the TNZ ZCAZ, the coupling RINGFEDER^® TNZ ZCBZ is equipped with a bolt-on O-ring carrier which facilitates installation by changing the mounting sequence. The coupling model TNZ ZCBZ is complemented with a spacer that is mounted between the sleeves of a TNZ ZCB coupling by using ﬁtted bolts.

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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_min mm	Gw_sb kg
69	XC4106	1750	On request	12	50	111	81,5	153	Depending on E
85	XC4108	2750	On request	18	60	152	103,5	193	Depending on E
107	XC4110	5500	On request	28	75	178	127,5	239	Depending on E
133	XC4113	8500	On request	40	95	213	156	281	Depending on E
152	XC4115	13500	On request	50	110	240	181	333	Depending on E
179	XC4117	22000	On request	60	130	280	209	388	Depending on E
209	XC4120	35000	On request	70	155	318	245,5	428	Depending on E
234	XC4123	43000	On request	85	170	346	274	466	Depending on E
254	XC4125	68000	On request	95	190	389	307	552	Depending on E
279	XC4127	82000	On request	110	210	425	334,5	608	Depending on E
305	XC4130	150000	On request	120	230	457	366	648	Depending on E
355	XC4135	195000	On request	130	270	527	423	734	Depending on E

Größe/Size	Bezeichnung / Identifier ZCA	T_KN ft-lbs	n_max rpm	d_1kmin inch	d_1kmax inch	D₁ inch	D₆ inch	L_min inch	Gw_sb lbs
69	XC4106	1291	On request	0.472	1.969	4.370	3.209	6.024	0Depending on E
85	XC4108	2028	On request	0.709	2.362	5.984	4.075	7.598	0Depending on E
107	XC4110	4057	On request	1.102	2.953	7.008	5.020	9.409	0Depending on E
133	XC4113	6269	On request	1.575	3.740	8.386	6.142	11.063	0Depending on E
152	XC4115	9957	On request	1.969	4.331	9.449	7.126	13.110	0Depending on E
179	XC4117	16227	On request	2.362	5.118	11.024	8.228	15.276	0Depending on E
209	XC4120	25815	On request	2.756	6.102	12.520	9.665	16.850	0Depending on E
234	XC4123	31716	On request	3.346	6.693	13.622	10.787	18.346	0Depending on E
254	XC4125	50155	On request	3.740	7.480	15.315	12.087	21.732	0Depending on E
279	XC4127	60481	On request	4.331	8.268	16.732	13.169	23.937	0Depending on E
305	XC4130	110636	On request	4.724	9.055	17.992	14.409	25.512	0Depending on E
355	XC4135	143826	On request	5.118	10.630	20.748	16.654	28.898	0Depending on E

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.).