Flexible couplings Flexible Torsion shaft couplings... LB Coupling...Technical data, Service faktor... Dimensions, Type of rubber BICO-TL Coupling...Technical data, Service faktor... Dimensions, Type of rubber BICO-S Coupling...Technical data, Service faktor... Dimensions, Type of rubber BORES, KEYWAYS...Dimensions, fits, iso tolerances INSTALLATION TAPER BUSH IEC MOTORS... LB Coupling / Bico Coupling...... Dimensions... IEC standard motors and matching BIRN couplings SPECIFICATIONS... Material, balancing, packing
Flexible torsion shaft couplings flexible couplings are suitable for the most common machine constructions requirering a power transmission with dampend vibration. Instantaneous shock-loads orginating from an irregular cycle of operation of engines as well as working machines, are eliminated or effectively dampend. The couplings ensure a reliable power transmission, also with the often inevitable axial, radial, and angular misallignment between the coupled machines. In built features couplings ensures safe continuous operation at unforeseen overloads by means of the tested principle for claw- and boltcouplings. couplings are the standard veresion manufactured form the electric melted quality cast iron, which warrants a homogeneous and faultless material. LB type coupling is suitable for transmissions with special demands on dampend vibration. The transmission of torque is effected via rubber bushings especially shaped, to give the coupling a progressively increasing characteristic effectively dampening the torsional vibration at and in the critical speed of the machine unit. The flexible rubber bushings of the coupling have an initial axial tension, which transmits the torque without slack and makes applications in both rotation directions possible. The coupling permits the mounting and dismounting of the motor or the machine, and the replacement of rubber bushings, without axial displacement, when the bolts are removed from the coupling halves. The large deformation capacity of the rubber bushings, combined with self-lubricating properties, ensures that axial, radial, and angular misalignment are compensated for without considerable wear. BICO range couplings are optimized with regard to power rating, outside dimensions, and shaft diameter. The flexible rubber traction gear rim effectively dampens vibrations and compensates axial, radial and angular misalignments. The range consists of two types, the BICO-TL and the BICO-S coupling. One flange of the BICO-TL can, without any problems, be installed together with a flange of a corresponding size of the BICO-S coupling. BICO-TL type coupling with the Taper bush ensures quick and easy mounting and dismounting, and that the coupling is delivered ready for installation. BICO-S type coupling with solid hub, can be bored to a larger shaft dimension than the TL type. Mounting and dismounting as well as a replacement of the rubber element is only possible by axial displacement of the motor or the machine.
LB Coupling TECHNICAL DATA Size of coupling Power rating pr. revolution Torque for coupl. in GG Max speed for coupl. in GGG Moment of inertia ½ coupling 1) LB P/n TKN n n J Ref. KW/rev. Nm r.p.m. r.p.m. Kgm 2 Kg Weight 1/1 coupling 1) 12,46 44 5 6,131 2,5 13,12 98 45 6,264 3,6 13½,133 128 45 6,245 3,9 14,236 225 4 6,5 5,7 15,513 49 36 56,1349 1, 16,88 844 3 5,3335 17,3 17,147 143 265 45,73 28,7 18,221 218 225 4,17365 46,8 19,329 314 2 36,28859 68,4 11,616 5885 18 33,53246 98,2 111,735 724 165 3,9979 138,2 112 1,13 1545 15 28 1,96171 216,4 114 1,617 1545 125 25 3,19578 297, 116 2,55 23935 112 225 5,4717 411, 118 3,676 3512 1 2 1,18873 561,6 1) Valid for couplings with solid hubs SERVICE FACTOR K FOR OPERATING MODE Driven machine Operating conditions Moment of inertia relative to driving machine Instanteneous shock Unif orm Driving machine Uneven oscillations Uneven heavy oscillations Uniform, no vibration Insignificant None 1,5 1,7 2,1 Uniform, no vibration Minor Insignificant 1,6 1,9 2,4 Uneven, low vibration Identical Minor 1,8 2,1 2,8 Uneven, vibration High Medium 2, 2,4 3,2 Uneven, shocks with vibration Very high Heavy 2,6 2,8 3,6 RATIO Sd FOR OPERATING HOURS Operating hours per day above 2 8 16 h up to 2 8 16 Sd,9 1, 1,12 1,25 The coupling must be designed, so that the occuring loads do not exceed the permissible values. Calculation of the nominal torque: TN = 955 x P/n [Nm] RATIO Sz FOR STARTING FREQUENCY Number of starts per hour above 1 2 4 1/h up to 1 2 4 6 Sz 1, 1,2 1,3 1,5 Calculation of the required coupling torque: TKN TN x K x Sd x Sz [Nm] P = Output in KW n = r.p.m.
LB Coupling G I B L C S DIMENSIONS Size of coupling Max. Dismounting dim. bores Bushings Bolts LB D Du d L I B C G S Bolts per 1/1 coupl. Ref. mm mm mm mm mm mm mm mm mm pc. 12 28 97 45 72,5 35 21 2,5 25 3 4 13 3 112 52 83, 4 25 3, 3 3 6 13½ 38 112 63 92,5 45 21 2,5 3 3 8 14 42 13 68 13, 5 25 3, 25 3 8 15 5 16 82 123, 6 3 3, 25 25 8 16 65 19 11 153, 75 3 3, 1 25 1 17 75 225 125 183,5 9 38 3,5 15 3 1 18 9 27 15 24, 1 45 4, 2 35 8 19 11 3 18 244, 12 45 4, 5 35 1 11 115 34 185 284, 14 55 4, 35 1 111 14 38 22 324, 16 55 4, 35 1 112 16 44 25 364,5 18 68 4,5 4 8 114 18 5 28 44,5 2 68 4,5 4 1 116 2 56 35 445, 22 83 5, 4 1 118 22 64 33 55, 25 83 5, 4 12 TYPE OF RUBBER Type Characteristics Temperature standard range Ref. C NL Natural rubber with canvas insertion standard quality for all common applications Wear resistance Resistancy against oil -25 < t < +45 Very good Inferior N Natural rubber, more flexible than type NL -25 < t < +45 Very good Inferior F Nitril rubber, especially used for couplings exposed to oil splashs -2 < t < +6 Good Very good
BICO-TL Coupling TECHNICAL DATA Size of coupling BICO-TL Power rating per revolution P/n Nominal TKN Torque Max. speed Moment of inertia ½ coupling 1) Max. TK Max. n J Weight 1/1 coupling 1) Ref. KW/rev. Nm Nm r.p.m. Kgm 2 Kg 7-TL,33 31,5 72 91,43 1,1 9-TL,84 8 18 74,58 1,7 11-TL,168 16 36 59,2 4,1 13-TL,33 315 72 485,39 5,3 15-TL,628 6 12 42,945 7,9 18-TL,995 95 18 35,217 13,5 23-TL,294 2 36 28,634 24, 28-TL,3927 375 72 23,22327 48,9 1) Valid for coupling incl. bush with medium bore SERVICE FACTOR K FOR OPERATING MODE Operating conditions Driven machine Moment of inertia relative to driving machine Instanteneous shock Uniform Driving machine Uneven oscillations Uneven heavy oscillations Uniform, no vibration Insignificant None 1, 1,2 1,4 Uniform, no vibration Minor Insignificant 1,3 1,5 1,8 Uneven, low vibration Identical Minor 1,6 1,8 2, Uneven, vibration High Medium 2, 2,3 2,6 Uneven, shocks with vibration Very high Heavy 2,5 2,9 3,2 RATIO Sd FOR OPERATING HOURS Operating hours per day above 2 8 16 h up to 2 8 16 Sd,9 1, 1,12 1,25 RATIO Sz FOR STARTING FREQUENCY Number of starts per hour The coupling must be designed, so that the occuring loads do not exceed the permissible values Calculation of the nominal torque: TN = 955 V P/n Calculation of the required coupling torque: [Nm] above 1 2 4 1/h up to 1 2 4 6 Sz 1, 1,2 1,3 1,5 TKN $ TN V K V Sd V Sz P = Output in KW n = r.p.m. [Nm]
BICO-TL Coupling T TL 1) Type U B C Type I 1) I W L DIMENSIONS Size of coupling BICO-TL Min. D Bores Max. D Bush TL Du d L I T B C Wrench clearance W Ref. mm mm Ref. mm mm mm mm mm mm mm mm 7-TL 9 25 18 69 6 65, 3,2 23,5 1,5 4,6 29 9-TL 9 28 118 85 7 7, 33,2 23,5 13,7 3,6 29 11-TL 14 42 161 112 1 83, 39,7 27, 21, 3,6 38 13-TL 14 42 161 13 15 9, 42, 27, 24, 6, 38 15-TL 14 5 212 15 115 17, 5, 33,5 26,5 7,2 42 18-TL 16 6 2517 18 125 141, 67, 46,5 32,5 7,2 48 23-TL 25 75 32 225 155 164, 76,6 52,5 37,5 1,8 55 28-TL 35 1 3525 275 26 27,5 1,6 66,5 49,6 6,3 67 TYPE OF RUBBER Type Characteristics Temperature standard range Ref. C Wear resistance Resistancy against oil F Nitril rubber, standard quality for all applications -2 < t < +6 Good Very good 1) Caracterize mounting for Taper-bushings Type U: External mounting, the hub's side Type I: Internal mounting, the flange's side
BICO-S Coupling TECHNICAL DATA Size of coupling BICO-S Power rating per revolution P/n Nominal TKN Torque Max. speed Moment of inertia Max. ½ coupling 1) TK Max. n J Weight 1/1 coupling 1) Ref. KW/rev. Nm Nm r.p.m. Kgm2 Kg 7-S,33 31,5 72 91,39 1,1 9-S,84 8 18 74,54 1,7 11-S,168 16 36 59,172 4,2 13-S,33 315 72 485,425 6,3 15-S,628 6 12 42,156 9,4 18-S,995 95 18 35,241 14,5 23-S,294 2 36 28,726 28, 28-S,3927 375 72 23,27395 62,6 1) Valid for couplings with solid hubs. SERVICE FACTOR K FOR OPERATING MODE Operating conditions Driven machine Moment of inertia relative to driving machine Instanteneous shock Uniform Driving machine Uneven oscillations Uneven heavy oscillations Uniform, no vibration Insignificant None 1, 1,2 1,4 Uniform, no vibration Minor Insignificant 1,3 1,5 1,8 Uneven, low vibration Identical Minor 1,6 1,8 2, Uneven, vibration High Medium 2, 2,3 2,6 Uneven, shocks with vibration Very high Heavy 2,5 2,9 3,2 RATIO Sd FOR OPERATING HOURS Operating hours per day above 2 8 16 h up to 2 8 16 Sd,9 1, 1,12 1,25 The coupling must be designed, so that the occuring loads do not exceed the permissible values. Calculation of the nominal torque: TN = 955 V P/n [Nm] RATIO Sz FOR STARTING FREQUENCY Number of starts per hour above 1 2 4 1/h up to 1 2 4 6 Sz 1, 1,2 1,3 1,5 Calculation of the required coupling torque: TKN $ TN V K V Sd V Sz P = Output in KW n = r.p.m. [Nm]
BICO-S Coupling T TL 1) Type U B C Type I 1) I W L DIMENSIONS Size of coupling Max. bores BICO-S D Du d L I T B C S Dismounting dim. Ref. mm mm Ref. mm mm mm mm mm mm 7-S 32 69 55 68, 31,7 25, 1,5 4,6 18, 9-S 38 85 6 91, 43,7 34, 13,7 3,6 23, 11-S 48 112 8 117, 56,7 44, 21, 3,6 28,5 13-S 55 13 9 136, 65, 5, 24, 6, 35,5 15-S 65 15 14 155, 74, 58, 26,5 7,2 4, 18-S 75 18 12 184, 88,4 68, 32,5 7,2 48, 23-S 95 225 15 229, 19, 85, 37,5 1,8 55, 28-S 13 275 26 285,5 139,5 15,5 49,6 6,3 73, TYPE OF RUBBER Temperature Type Characteristics standard range Wear resistance Resistancy against oil Ref. C F Nitril rubber, standard quality for all applications -2 < t < +6 Good Very good 1) Caracterize mounting for Taper-bushings Type U: External mounting, the hub's side Type I: Internal mounting, the flange's side
Bores, keyway DIMENSIONS Diameter Keys cross-sect. Keyway depth shaft hub above up to b x h t 1 t 2 Tol. for t 1 /t 2 mm mm mm mm mm mm 6 8 2 x 2 1,2 1, 8 1 3 x 3 1,8 1,4 1 12 4 x 4 2,5 1,8 12 17 5 x 5 3, 2,3 17 22 6 x 6 3,5 2,8 22 3 8 x 7 4, 3,3 3 38 1 x 8 5, 3,3 38 44 12 x 8 5, 3,3 44 5 14 x 9 5,5 3,8 5 58 16 x 1 6, 4,3 58 65 18 x 11 7, 4,4 65 75 2 x 12 7,5 4,9 75 85 22 x 14 9, 5,4 85 95 25 x 14 9, 5,4 95 11 28 x 16 1, 6,4 11 13 32 x 18 11, 7,4 13 15 36 x 2 12, 8,4 15 17 4 x 22 13, 9,4 17 2 45 x 25 15, 1,4 +,1 +,2 +,3 2 23 5 x 28 17, 11,4 (ISO R 773: 1969) ISO TOLERANCES Nom. diameter Bore Shaft above up to H7 H8 k6 j6 g6 h7 mm mm µm µm µm µm µm µm 6 1 + 15 + 22 + + 1 1 + - 7 2-5 - 14-15 1 18 + 18 + 27 + 12 + 8-6 + 1-3 - 17-18 18 3 + 21 + 33 + 15 + 9-7 + 2-4 - 2-21 3 5 + 25 + 39 + + 18 2 + 11-5 - 9-25 - 25 5 8 + 3 + 46 + + 21 2 + 12-7 - - 1 29-3 8 12 + 35 + 54 + 25 + 13-12 + 3-9 - 34-35 12 18 + 4 + 63 + 28 + 14-14 + 3-11 - 39-4 18 25 + 46 + 72 + 33 + 16-15 + 4-13 - 44-46 (ISO 286-1: 1988) FITS Type of fit Keyway width Diameter Shaft Hub Shaft Hub Characteristic of fit Clearance fit H8 D1 g6 H7 Movable Clearance fit N9 Js9 h7 H8 Easy mounting 1) Generally keys should be used, the width "b" of which is machined to a tolerance "h9". 2) It is recommended, that the bearing length "l" of the key is machined to max. l = 1,2 V D. A larger length does not cause an increase of torque transmission. Push fit Easy to pull out P9 P9 j6 H7 For oscillation torques 3) For reversing operation, and when heavy shock loads occur, it is recommended that the coupling is mounted with an interference fit. Transition fit hard to pull out P9 P9 k6 H7 Solid, only rarely dismounting 4) The couplings are bored by using the diameter "Du" for set up.
Installation C The coupling halves must be correctly mounted and aligned accurately before start-up. The couplings are bored by using diameter Du for setup. Ensure that the nuts on the bolts are loosened before installation, so that the rubber bushes are not tightened. When mounting take care, that dimension C as mentioned in the tables of the particular coupling is maintained, in order to ensure the axial mobility of the coupling. Alignment may be carried out by means of a vernier caliper and a slide bar placed on the outside coupling diameter Du. Couplings are machined to a tolerance of IT 8. Alignment is carried out in two alternate 9 levels. The couplings are capable of compensating either a radial or angular misalignment. The mentioned permissible misalignments are suggested values for revolutions less than 1 rpm, for type LB 11-118 less than 5 rpm, and a service factor $ 2,5. Higher numbers of revolutions and lower service factor require a more accurate alignment. A careful and accurate alignment will always increase the working life of the coupling. Axial misalignment Radial misalignment Angular misalignment Ka C2 Kw 1) C1 C = C2 -C1 LB COUPLING Size of Max. misalignment coupling Ka Kr C Ref. mm mm mm 12 ± 2,5,1,3 13 ± 3,,1,3 13½ ± 2,5,1,3 14 ± 3,,1,3 15 ± 3,,1,4 16 ± 3,,1,4 17 ± 3,5,2,5 18 ± 4,,2,6 19 ± 4,,2,6 11 ± 4,,2,8 111 ± 4,,2,8 112 ± 4,5,3 1, 114 ± 4,5,3 1, 116 ± 5,,3 1,5 118 ± 5,,3 1,5 BICO COUPLING Size of Max. misalignment coupling Ka Kr C Ref. mm mm mm 7 +,2,3,5 9 +,5,3,5 11 +,6,3 1, 13 +,8,4 1, 15 +,9,4 1,5 18 + 1,1,4 1,5 23 + 1,3,5 2, 28 + 1,7,5 2,5 1) The permissible angular misalignment Kw is in the tables mentioned as the measureable dimension C.
Taper Bush 2 x Type A 3 x Type B D b t 2 Size mm mm * 18 118 121 161 212 2517 32 3525 9 3 1,4-1 3 1,4-11 4 1,8-12 4 1,8-14 5 2,3-16 5 2,3-18 6 2,8-19 6 2,8-2 6 2,8-22 6 3,3-24 8 3,3 1,3 * 25 8 3,3 1,3 * 28 8 3,3 1,3 * 3 8 3,3-32 1 3,3-35 1 3,3-38 1 3,3-4 12 3,3 1,3 * 42 12 3,3 1,3 * 45 14 3,8-48 14 3,8-5 14 3,8-55 16 4,3-6 18 4,4-65 18 4,4-7 2 4,9-75 2 4,9-8 22 5,4-85 22 5,4-9 25 5,4-1 28 6,4 - TYPE A A A A A A A B T mm 35, 38, 47,5 57, 7, 85,5 18, 127, Appr. weight kg,1,1,2,3,7 1,5 2,7 3,8 Screws B.S.W. 1/4" 1/4" 3/8" 3/8" 7/16" 1/2" 5/8" 1/2" x x x x x x x x ½" ½" 5/8" 5/8" 7/8" 1" 1¼" 1½" Tightening torque Nm 5,6 5,6 2 2 31 48 9 113 *Bush with reduced height for keyway
IEC Motors IEC Standard motors and matching Type MOTOR Shaft dia. Motor power COUPLING couplings 3 r.p.m. 15 r.p.m. 1 r.p.m. 75 r.p.m. BICO Motor BICO Motor BICO Motor BICO LB LB LB LB TL S power TL S power TL S power TL S Ref. mm KW Ref. Ref. Ref. KW Ref. Ref. Ref. KW Ref. Ref. Ref. KW Ref. Ref. Ref. 63B,25,55 63D,18 71 14,12 71A,37,25,18,9 71B,55 7TL,37 7TL,25 7TL,12 7S 8A,75,55 7S,37 13 19 12 8B 1,1 12 7S,75,55 12,18 9S 1,5 1,1,75,37 24 9L 2,2 1,5 1,1,55 1L 3 1,5 1LA 2,2 28 9TL 1LB 3 112M 4 132S 5,5 132SA 5,5 4 13 9TL 9S 2,2 9TL,75 1,1 1,5 3 2,2 9S 132SB 7,5 38 13½ 9S 13½ 13½ 132M 7,5 3 132MA 13TL 13TL 11S 4 132MB 16MA 11 11S 4 16M 42 15 14 11 16L 18,5 11S 18M 22 18,5 48 15 15TL 18L 15 14 15 15TL 13S 5,5 7,5 11 15 14 13TL 5,5 7,5 15 15TL 13S 11 2LA 3 15S 18,5 55 15S 2L 37 3 22 15 13S 18TL 18TL 225S 18TL 37 16 16 18,5 55/6 225M 45 45 18S 3 18S 22 25M 6/65 55 16 55 37 3 15S 28S 75 75 23TL 45 23TL 37 65/75 17 17 28M 9 9 23S 55 23S 45 18S 315S 11 23TL 11 75 55 315MA 65/8 132 132 18 28TL 9 18 28TL 75 315MB 16 17 16 11 9 23S 28S 28S 355S 2 2 132 11 19 19 19 355MA 25 18 28TL 25 16 132 8/1 355MB 28 28S 315 11 2 16 11 11 355MC 25 The couplings are selected for standard operation conditions with a service factor of min. 2. For vibration or shock-load torque we recommend a check calculation. 12 13½ 14 7TL 9TL 13TL 7S 9S 11S 15 15TL 13S 16 17 18TL 23TL 18 28TL 15S 18S 23S 28S
Specifications MATERIAL All cast iron used for the couplings is electrically melted quality cast iron. This gives the iron an increased degree of purity and quality. Electrically melted iron contains only a minimum of contaminating matters as e. g. phosphor and sulphur. Therefore it has a very close-grained structure without microporosities. Because of the high degree of purity gas holes in the cast iron are avoided. SPECIFICATIONS Properties Quality grade Standard type - grey iron GG25 GG3 GG35 Special type SG iron GGG4 Tensile strength N/mm 2 25 3 35 4 Elongation % 15 DIN 1691/1693 Ref. GG25 GG3 GG35 GGG4 BALANCING LB and BICO-TL couplings are supplied with a max. static unbalance, balanced in one plane, according to quality grade G16 1). Upon request the couplings can be supplied balanced in two planes, dynamic unbalance, according to quality grade G16 or G6,3. Balancing in two planes is only carried out on couplings with finished bores. BICO-S couplings supplied ex stock are not balanced. Balancing is carried out only upon request. 1) Designation according to ISO 194 PACKING LB couplings are protected completely with red anticorrosion paint. The coupling halves are packed separatly in solid cardboard boxes or wooden cases. BICO couplings are are zinkphosphated and oiled. They are not separately packed. Taper-bushings are packed in cardboard boxes together with screws and mounting instructions. INQUIRES When inquiring or ordering please state: 1) If coupling is to be supplied without or with bore. If the latter case please state shaft diameter, tolerance and size of keyway. 2) Required rubber quality. 3) Type of driving in respect of driven machine. 4) Max. transmitted power, starting torque, shock-load value. 5) Revolutions per minute. CONVERSION FACTOR Power: P = 1 [KW] = 1,36 [HP] Torque: T = 1 [Nm] =,12 [Kpm] Moment of inertia: J = ½m X r 2 = m X D 2 /8 = (G X D 2 )/8 [Kgm 2 ] Peripheral speed: V = n X D X pi X 1/6 [m/s]