ZAPEX ZN Series. 5/2 Overview. 5/2 Benefits. 5/2 Application. 5/2 Design. 5/2 Function. 5/3 Technical data

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1 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series /2 Overview /2 Benefits /2 pplication /2 Design /2 Function /3 Technical data /4 Type ZNN /4 Selection and ordering data / Type ZNZS / Selection and ordering data /6 Type ZNW /6 Selection and ordering data /7 Type ZNBG /7 Selection and ordering data /8 Type ZNN /8 Selection and ordering data /9 Type ZNZ /9 Selection and ordering data /10 Type ZNNV /10 Selection and ordering data /11 Type ZNN for axial displacement /11 Selection and ordering data /12 Customized hub design for ZEX ZN Series /12 Selection and ordering data /13 Type ZN flange connection dimensions /13 Selection and ordering data /14 Spare and wear parts /14 Selection and ordering data Siemens MD

2 Torsionally Rigid Gear Couplings ZEX ZN Series General information Siemens G 201 Overview Coupling suitable for use in potentially explosive atmospheres. Complies with the current TEX Directive for: II 2 GD c 120 C (T4) -20 C T a +80 C IM2 Materials Hubs and flanged sleeves: Steel O ring: erbunan Lubricant: Grease filling Benefits ZEX gear couplings link machine shafts and compensate for shaft misalignment with weak restorative forces. High transmissible combined with compactness and light weight are characteristic of ZEX couplings. ZEX coupling types are constructed on a modular principle, so application-related solutions can be delivered quickly. This coupling requires very little maintenance. Regular grease changes at the prescribed intervals prolong the service life of the coupling. pplication ZEX couplings are especially suited for operation in harsh operating conditions, such as drives in the iron smelting or cement industry. ZEX couplings are suitable for reverse operation and horizontal mounting positions and, in the case of type ZNNV, for vertical mounting positions. Design ZEX coupling comprises two hub sections with external teeth which are mounted on the machine shafts. The external teeth engage with a flanged sleeve with corresponding internal teeth. The flanged sleeves are connected via two flanges with close-fitting bolts. The teeth are lubricated with grease. On the ZEX type ZN, O-rings are used to seal the tooth space. The O-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. ZEX ZN gear coupling types Type ZNN ZNZS ZNW ZNBG ZNN ZNZ ZNNV ZNN Description Standard type With adapter With intermediate shaft With straight brake disk With axial backlash limiter With adapter and axial backlash limiter Vertical type For axial displacement Further application-related coupling types are available. Dimension sheets for and information on these are available on request. Function The is transmitted through the coupling teeth. The teeth are crowned, so angular displacement per tooth plane is possible. Radial misalignment can be compensated for via the space V 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. small angular misalignment on the coupling teeth results in an advantageous distribution of the lubricant film in contact with the teeth 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. /2 Siemens MD

3 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series General information Technical data ower ratings Size Rated Maximum Overload Fatigue Torsional stiffness ermitted axial shaft misalignment ZN T KN T Kmax T KOL T KW C Tdyn ΔK a Nm Nm Nm knm/rad mm The specified torsional stiffness "ZN" applies to coupling types ZNN, ZNN, ZNNV and ZNN for axial displacement. Torsional stiffness of types ZNZS, ZNW, ZNBG and ZNZ on request. The axial misalignment ΔK a must be understood as the maximum permitted enlargement of the hub distance S of the coupling. The axial misalignment ΔK a does not apply to the types ZNN, ZNNV, ZNBG and ZNZ. ngular misalignment ΔK w Types ZNN, ZNZS, ZNW, ZNNV, ZNN for axial displacement: ΔK w = 0. Types ZNBG, ZNN, ZNZ: ΔK w = 0.2 Radial misalignment ΔK r Types ZNN, ZNZS, ZNW, ZNNV, ZNN for axial displacement: ΔK r V tan 0. Types ZNBG, ZNN, ZNZ: ΔK r V tan 0.2 For the tooth distance V, see the relevant table for the subassembly. Siemens MD /3

4 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNN Siemens G 201 J 1 J 2 art 1 V art 2 art 1 art 2 Variant S1 art 1 art 2 NL1 S1 Variant B S2 art 1 art 2 G_MD10_EN_0007a Variant B S3 Size Q Rated Maximum speed Dimensions in mm T KN n Kmax D1, D2 DIN Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia apply to a coupling half with maximum bore diameter. s apply to the entire coupling with maximum bores. D ND1/ ND2 NL1/ Mass moment of inertia rticle No. Order codes for bore diameters and tolerances are specified in catalog D4 S1 S2 S3 V Q J 1 /J 2 m Nm rpm min. max. kgm 2 kg LC LC LC LC LC LC LC LC LC LC LC LC Variant: B B B C ZEX ZNN coupling, size 107, variant, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw. 2LC Z L0W+M1+M13 /4 Siemens MD

5 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNZS V art 1 V1 LZ V1 art 2 art 1 art 2 NL1 S8 S S8 Variant S9 S9 Variant B G_MD10_EN_0008a Size Rated Dimensions in mm rticle No. lain text required for T KN D1, D2 D ND1/ NL1/ D4 S8 S9 V1 Q LZ dimension S m m ND2 Order codes for bore DIN diameters and tolerances each are specified in catalog 100 mm pipe Nm min. max. min. kg kg LC Z LC Z LC Z LC Z LC Z LC Z LC Z LC Z LC Z LC Z LC Z LC Z Variant: D B E V = 2 V1 + LZ Q Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia on request. s apply to the entire coupling with maximum bores and an adapter length of LZ min. Maximum speed, limited by weight and critical adapter speed, on request. ZEX ZNZS coupling, size 107, variant B, adapter for S = 20 mm, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw. 2LC0330-1E99-0Z0-Z L0W+M1++M13 lain text to : S = 20 mm Siemens MD /

6 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNW Siemens G 201 Coupling 1 art 3 V1 art 1 V Intermediate shaft V1 Coupling 2 NL1 S4 NLW1 ØDW1 ØNDW1 LW S ØNDW2 ØDW2 NLW2 S4 Variant B G_MD10_EN_0009b art 3 art 1 Variant S10 S10 Size Rated T KN Dimensions in mm D1, D2 DIN V = S 2 V1 Mass moments of inertia on request. s apply to either coupling 1 or 2 with maximum bores, without intermediate shaft. Maximum speed, limited by weight and critical speed of intermediate shaft, on request. Coupling 1: ZEX ZNW coupling, size 107, variant B, art 3: Bore 4K7 mm, keyway to DIN and set screw, art 1: Bore 4H7 mm, keyway to DIN and set screw. 2LC0330-1W99-00-Z L1+L13+M1 D ND1/ ND2 NL1/ / NLW1/ NLW2 DW1, DW2 DIN 688 NDW1/ NDW2 rticle No. D4 S4 S10 V1 Order codes for bore diameters and tolerances are specified in catalog m Nm min. max. min. max. kg LC LC LC LC LC LC LC LC LC LC LC LC Variant: V B W Intermediate shaft: Intermediate shaft to ZEX ZNW coupling, size 107, length LW = 70 mm, shaft journal 4p6 x 0 long; keyway DIN LC9330-0XH00-00-Z lain text to : DW1 = 4p6 mm, NLW1 = 0 mm, DW2 = 4p6 mm, NLW2 = 0 mm, LW = 70 mm Coupling 2: ZEX ZNW coupling, size 107, variant B, art 1: Bore 4H7 mm, keyway to DIN and set screw, art 3: Bore 4K7 mm, keyway to DIN and set screw. 2LC0330-0W99-00-Z L1+M1+M13 /6 Siemens MD

7 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNBG E3 V art 1 art 2 art 1 art 2 ØDB NL1 S14 Variant S14 art 1 art 2 G_MD10_EN_00061a 12.7 Variant B S1 Variant limited in displacement and axial movement. Max. displacement 0.2. Size Q Rated Maximum speed Dimensions in mm T KN n Kmax D1, D2 DIN Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia on request. s apply to the entire coupling with maximum bores. D ND1/ ND2 NL1/ rticle No. Brake disk Order codes for bore D4 S14 S1 V Q DB E3 diameters and tolerances are specified in catalog m Nm rpm min. max. kg LC LC LC LC B LC LC B LC LC B LC C LC LC B LC C LC LC B LC C LC LC B LC C LC D LC LC B LC C LC LC B LC Variant: Q B R ZEX ZNBG coupling, size 107, variant, brake disk diameter DB = 36 mm, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw. 2LC0330-1Q99-00-Z L0W+M1+M13 Siemens MD /7

8 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNN Siemens G 201 J 1 J 2 art 1 V art 2 NL1 S16 G_MD10_EN_00062a Variant limited in displacement and axial movement. Max. displacement 0.2. Size Q Rated Maximum speed Dimensions in mm T KN n Kmax D1, D2 DIN Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia apply to a coupling half with maximum bore diameter. s apply to the entire coupling with maximum bores. D ND1/ ND2 NL1/ Mass moment of inertia rticle No. Order codes for bore diameters and tolerances are specified in catalog D4 S16 V Q J1/J2 m Nm rpm min. max. kgm 2 kg LC0330-0F LC0330-1F LC0330-2F LC0330-3F LC0330-4F LC0330-F LC0330-6F LC0330-7F LC0330-8F LC0331-0F LC0331-1F LC0331-2F ZEX ZNN coupling, size 107, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw. rticle number: 2LC0330-1F99-00-Z L0W+M1+M13 /8 Siemens MD

9 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNZ V art 1 V1 V1 S17 LZ S17 art 2 NL1 S G_MD10_EN_00063a Variant limited in displacement and axial movement. Max. displacement 0.2. Size Rated Dimensions in mm rticle No. lain text required for T KN D1, D2 D ND1/ NL1/ D4 S17 V1 Q LZ dimension S m m ND2 Order codes for bore DIN diameters and tolerances each are specified in catalog 100 mm pipe Nm min. max. min. kg kg LC0330-0G -0Z LC0330-1G -0Z LC0330-2G -0Z LC0330-3G -0Z LC0330-4G -0Z LC0330-G -0Z LC0330-6G -0Z LC0330-7G -0Z LC0330-8G -0Z LC0331-0G -0Z LC0331-1G -0Z LC0331-2G -0Z V = 2 V1 + LZ Q Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia on request. s apply to the entire coupling with maximum bores and an adapter length of LZ min. Maximum speed, limited by weight and critical adapter speed, on request. ZEX ZNZ coupling, size 107, adapter for S = 20 mm, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw. 2LC0330-1G99-0Z0-Z L0W+M1++M13 lain text to : S = 20 mm Siemens MD /9

10 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNNV Siemens G 201 top art 1 J 1 V J 2 art 2 bottom S11 T1 M G_MD10_EN_00064a S12 NL1 When ordering, state thread size M and thread length T1 of the thrust piece. Size Q Rated Maximum speed Dimensions in mm T KN n Kmax D1, D2 DIN Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia apply to a coupling half with maximum bore diameter. s apply to the entire coupling with maximum bores. D ND1/ ND2 NL1/ Mass moment of inertia rticle No. Order codes for bore diameters and tolerances are specified in catalog D4 S11 S12 V Q J 1 /J 2 m Nm rpm min. max. kgm 2 kg LC0330-0H -00-Z LC0330-1H -00-Z LC0330-2H -00-Z LC0330-3H -00-Z LC0330-4H -00-Z LC0330-H -00-Z LC0330-6H -00-Z LC0330-7H -00-Z LC0330-8H -00-Z LC0331-0H -00-Z LC0331-1H -00-Z LC0331-2H -00-Z 270 ZEX ZNNV coupling, size 107, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw, thread M10 x 20 deep. 2LC0330-1H99-00-Z L0W +M1 +M13+ lain text to : Thread M10 x 20 /10 Siemens MD

11 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZNN for axial displacement J 1 J 2 art 1 V art 2 NL1 S G_MD10_EN_0006a Size V Q Rated Maximum speed Dimensions in mm T KN n Kmax D1, D2 DIN Valid at S max. Diameter required for renewing the sealing rings. Length required for renewing the sealing rings, aligning the coupling parts and tightening the set screw. Mass moments of inertia apply to a coupling half with maximum bore diameter. s apply to the entire coupling with maximum bores. D ND1/ ND2 NL1/ Mass moment of inertia rticle No. Order codes for bore diameters and tolerances are specified in catalog D4 S S V Q J 1 /J 2 m Nm rpm min. max. min. max. kgm 2 kg LC0330-0Y LC0330-1Y LC0330-2Y LC0330-3Y LC0330-4Y LC0330-Y LC0330-6Y LC0330-7Y LC0330-8Y LC0331-0Y LC0331-1Y LC0331-2Y ZEX ZNN coupling for axial displacement, size 107, Smin.=7mm, Smax.=1 mm, art 1: Bore 40H7 mm, keyway to DIN and set screw, art 2: Bore 4K7 mm, keyway to DIN and set screw. 2LC Z L0W +M1 +M13 Siemens MD /11

12 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series Customized hub design for ZEX ZN Series ZEX couplings can be provided with customized S-dimensions and hub lengths. The entire dimension S results from the sum of the individual measurements SF1 and SF2. SF1 and SF2 are the measurements from the interstice of the coupling ring flange up to the beginning of the respective hub. s standard SF1 and SF2 are identical to each other and the entire S-dimension arises in accordance with them. SF1 and SF2 can be chosen different on customer request, however the minimal and maximum values of the following table have to be observed. Within these limits the measurements SF1 and SF2 may be chosen freely. The distance V of the coupling teeth, the permitted bore diameter and the hub diameter remain unchanged. By stating the hub S-dimension and both hub lengths the coupling is completely described. Interstice art 1 art 2 S = SF1 + SF2 SF1 min. SF2 max. NL Standard NL Special NL Special S = SF1 + SF2 NL Standard G_MD10_EN_00183 SF1 max. SF2 min. art 1 Interstice art 2 Geometric data Size Standard hub lenght Minimal dimension Maximum dimension NL SF1 or SF2 SF1 or SF2 Standard mm min. mm max. mm The minimal hub lengths are not to fall below the standard hub lengths. If there s no other possibility, for hub lengths smaller than standard hub lengths the order codes "Y0" for part 1 and "Y1" for part 2 must be stated in plain text. Order code for hub prolongations (Y4.); Std-NL = Standard hub length art 1 Selected (special) hub length Order code min. max. > Std-NL 1.2 Std-NL Y40 (specification of hub length in plain text) > 1.2 Std-NL 1. Std-NL Y42 (specification of hub length in plain text) > 1. Std-NL 1.7 Std-NL Y44 (specification of hub length in plain text) > 1.7 Std-NL 2 Std-NL Y46 (specification of hub length in plain text) > 2 Std-NL Y48 (specification of hub length in plain text) rticle number The article number of the respective ZEX coupling type must be supplemented with "-Z" and order codes for no standard SFdimensions (order code "Y38" for part 1 and "Y39" for part 2). For no standard hub lengths the order codes "Y40" to "Y49" must be specified (see the table below). ZEX coupling ZNN 130, variant Hub left: bore D1 = 70H7 mm, keyway to DIN and set screw; NL1 = 110 mm; SF1 = 10 mm Hub right: bore D2 = 7H7 mm, keyway to DIN and set screw; = 7 mm; SF2 = 2 mm 2LC Z L1G M1H Y38 Y39 Y41 Y46 lain text to Y38: SF1 = 10 mm lain text to Y39: SF2 = 2 mm lain text to Y46: NL1 = 110 mm lain text to Y41: = 7 mm art 2 Selected (special) hub length Order code min. max. > Std-NL 1.2 Std-NL Y41 (specification of hub length in plain text) > 1.2 Std-NL 1. Std-NL Y43 (specification of hub length in plain text) > 1. Std-NL 1.7 Std-NL Y4 (specification of hub length in plain text) > 1.7 Std-NL 2 Std-NL Y47 (specification of hub length in plain text) > 2 Std-NL Y49 (specification of hub length in plain text) /12 Siemens MD

13 Siemens G 201 Torsionally Rigid Gear Couplings ZEX ZN Series Type ZN flange connection dimensions BF ØDFK ØDR U x ØDFB G_MD10_XX_00067 R Size Dimensions in mm D BF D4 DFK DFB U DR R Number Siemens MD /13

14 Torsionally Rigid Gear Couplings ZEX ZN Series Spare and wear parts Siemens G 201 Sealing rings The sealing rings are wear parts and must be replaced in accordance with the operating instructions. Size Hub diameter rticle No. ND1/ND2 mm LC0330-0XE LC0330-1XE LC0330-2XE LC0330-3XE LC0330-4XE LC0330-XE LC0330-6XE LC0330-7XE LC0330-8XE LC0331-0XE LC0331-1XE LC0331-2XE00-00 Siemens high-performance grease (cartridge 300 g) FF: Sealing compound (tube 60 ml) FF: /14 Siemens MD