Torsionally rigid gear couplings ZAPEX ZW series

• Информационные материалы

  Информационные материалы

  

  Coupling suitable for potentially explosive environments. Complies with Directive 94/9/EC for:

  

  II 2 GD c 120 °C (T4)
  -20 °C ≤ T_a ≤ +80 °C

  

  I M2

  Область применения

  ZAPEX couplings are especially suited for operation in harsh operating conditions, such as drives in the iron smelting or cement industry. ZAPEX couplings are suitable for reverse operation and horizontal mounting positions and, in the case of type ZWNV, for vertical mounting positions.

  Дизайн

  A ZAPEX coupling comprises two hub sections with external teeth which are mounted on the machine shafts. Each set of external teeth engages in a flanged socket with mating internal teeth. The flanged sleeves are connected via two flanges with close-fitting bolts.
  The teeth are lubricated with oil or grease. On the ZAPEX type ZW, DUO sealing rings are used to seal the tooth space. The DUO sealing rings prevent the lubricant from escaping and dirt from entering the tooth space. The parallel keyways must be sealed during assembly to prevent lubricant from escaping.

  Customized hub designs are described after the types.

  ZAPEX ZW gear coupling types

  Type	Description
  ZWN	Standard type
  ZZS	with adapter
  ZZW	with intermediate shaft
  ZWH	with coupling sleeve
  ZWBT	with offset brake disk
  ZWBG	with straight brake disk
  ZWB	with brake drum
  ZWTR	for rope drums
  ZBR	with shear pins
  ZWS	Clutch
  ZWNV	Vertical type
  ZWSE	Simple clutch-coupling combination

  
  
  

  Further application-related coupling types are available. Dimension sheets for and information on these are available on request.

  Функции

  The torque is transmitted through the coupling teeth. The teeth are crowned, so angular displacement per tooth plane is possible. Radial displacement can be compensated for via the space VA between the tooth planes. The internal teeth of the flanged sleeves are significantly wider than the external teeth of the hub parts, permitting a relatively high axial misalignment.

  A small angular misalignment on the coupling teeth results in an advantageous distribution of the lubricant film and a very low wear rate. This favorable condition can be deliberately set by aligning the drive with the machine shafts with a slight radial misalignment.

  Особенности

  ZAPEX gear couplings link machine shafts and compensate for shaft misalignment with weak restorative forces. High transmissible torque combined with compactness and light weight are characteristic of ZAPEX couplings. ZAPEX coupling types are constructed on a modular principle. This means that applicationspecific solutions can be delivered quickly. ZAPEX couplings require very little maintenance. Regular grease or oil changes at the prescribed intervals prolongs the service life of the coupling.

  Технические данные

  Power ratings

  Size	Rated torque	Maximum torque	Overload torque	Fatigue torque	Torsional stiffness	Permitted shaft misalignment
  					ZW
  	TKN	TKmax	TKOL	TKW	CTdyn	ΔKa
  	Nm	Nm	Nm	Nm	kNm/rad	mm
  112	1300	2600	5200	520	2000	1.0
  128	2500	5000	10000	1000	3600	1.0
  146	4300	8600	17200	1720	6900	1.0
  175	7000	14000	28000	2800	9360	1.0
  198	11600	23200	46400	4640	15600	1.0
  230	19000	38000	76000	7600	26300	1.0
  255	27000	54000	108000	10800	33400	1.5
  290	39000	78000	156000	15600	44000	1.5
  315	54000	108000	216000	21600	64100	1.5
  342	69000	138000	276000	27600	81600	1.5
  375	98000	196000	392000	39200	115600	1.5
  415	130000	260000	520000	52000	106000	1.5
  465	180000	360000	720000	72000	134600	2.0
  505	250000	500000	1000000	100000	168700	2.0
  545	320000	640000	1280000	128000	216900	2.0
  585	400000	800000	1600000	160000	263200	2.0
  640	510000	1020000	2040000	204000	356000	2.0
  690	660000	1320000	2640000	264000	431000	2.0
  730	790000	1580000	3160000	316000	538000	2.0
  780	1000000	2000000	4000000	400000	696000	3.0
  852	1200000	2400000	4800000	480000	926000	3.0
  910	1600000	3200000	6400000	640000	1118000	3.0
  1020	1900000	3800000	7600000	760000	1339000	3.0
  1080	2200000	4400000	8800000	880000	1605000	3.0
  1150	2700000	5400000	10800000	1080000	2120000	3.0
  1160	3350000	6700000	13400000	1340000	2474000	3.0
  1240	3800000	7600000	15200000	1520000	3079000	3.0
  1310	4600000	9200000	18400000	1840000	3693000	4.0
  1380	5300000	10600000	21200000	2120000	4383000	4.0
  1440	6250000	12500000	25000000	2500000	5056000	4.0
  1540	7200000	14400000	28800000	2880000	6115000	4.0

  
  
  

  In the case of type ZWTR, the rated torques which deviate from the above are specified in the dimension table.

  The stated torsional stiffness "ZW" applies to coupling types ZWN and ZWNV.
  Torsional stiffness of the remaining types on request.

  The axial misalignment ΔK_a must be understood as the maximum permitted enlargement of the hub distance S of the coupling.

  Angular misalignment ΔK_W

  • Types ZWN, ZZS, ZZW, ZWH, ZWB, ZBR, ZWS: ΔK_W = 1°
  • Types ZWBT and ZWBG: ΔK_W = 0.2°
  • Type ZWSE: ΔK_W = 0.4°

  Radial misalignment ΔK_r

  • Types ZWN, ZZS, ZZW, ZWH, ZWB, ZBR, ZWS und ZWSE: ΔK_r ≤ VA · tan 1°
  • Types ZWBT and ZWBG: ΔK_r ≤ VA · tan 0.2°

  For the tooth distance VA, see the relevant table for the subassembly.