Page 6 of Roller Chain Couplings by U.S. Tsubaki

qd® coupling taper-lock® coupling · qd® couplings coupling number bushing max torque in lbs unit max bore abcdl coupling o.d k wt lbs 4016ja 5018sh 6020sk 8018sf ja sh sk sf 1000 3500 7000 11,000 1 13/8 21/8 25/16 2 231/32 37/8 49/16 /8 1 11/4 13/4 7 /32 /8 7 /16 37 /64 9 3 15/16 11/2 17/8 23/8 229/32 33/8 43/16 521/64 31/32 43/16 51/2 6 21/32 11/4 13/4 21/4 21/4 .90 1.30 2.50 5.30 maximum bore indicated is the maximum bore suggested with standard keyway k dimension reflects the minimum clearance to remove the coupling half by using the screws as jack screws approximate weight of coupling half with bushing · taper-lock® couplings type tlh coupling number type tlf max coupling torque bushing number in lbs.unit used bushing data max bore min bore abcj k 3 /4 11/16 13/8 21/16 25/8 l coupling o.d wt lbs 4016tlh 5018tlh 6020tlh 8020tlh 10020tlh 4016tlf 5018tlf 6020tlf 8020tlf 10020tlf 1300 4300 7150 24,000 44,800 1108 1610 2012 3020 3535 11/8 15/8 2 3 31/2 /2 /2 1 /2 15/16 13/16 1 1 131/32 231/32 37/8 53/8 623/32 /8 1 11/4 2 31/2 7 /32 /8 7 /16 37 /64 23 /32 9 3 /8 /16 15 /16 13/16 2 5 13 21/32 23/8 215/16 437/64 7 23/32 31/32 43/16 5 1/2 719/64 91/8 .90 1.10 2.70 6.10 19.00 note for h type taper-lock bushing installs from the hub side of the flange for f type taper-lock bushing installs from the face side space required to tighten bushing with shortened hex key space is also required to loosen screws to permit the removal of the hub by the puller space required to loosen bushing with shortened hex key using screws as jack screws no puller is required approximate weight of coupling half with bushing qd® is a registered trademark of and is used under license from emerson electric company taper-lock® is a registered trademark of reliance electric company lubrication choose one of the following lubrication systems when using roller chain couplings the choice depends upon the operating speed refer to the horsepower ratings table 2 pg.3 use nlgi grade 1 or 2 grease lubrication system 1 apply grease regularly once per month lubrication system 2 apply grease regularly once a week or install a coupling cover filled with grease lubrication system 3 install a coupling cover filled with grease change the grease according to table 4 the amount of grease to apply is shown in table 3 if these amounts are followed there will be a slight amount of leakage at the beginning of the operation but this will soon stop for system 3 it is especially important to use high-grade grease because of centrifugal force there is a tendency for the grease to stick to the inner surface of the cover resulting in inadequate lubrication table 3 amount of grease to apply coupling cover size 40 cover 50 cover 60 cover 80 cover 100 cover amount lb .16 .32 .71 1.41 3.00 table 4 grease change interval for use with coupling cover operating conditions more than 1/2 max speed less than 1/2 max speed first change 1,000 hours 2,000 hours interval after first change 2,000 hours 4,000 hours

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