Text version of the page

KD

®

Disc CouplingsDisc Pack DataSelection Procedure

1. Coupling Style:
®

MT disc pack[ Medium Torque ]

Select the appropriate KD coupling style for your applicationfrom the Product Overview & Index.

unitized, 3 bolt disc with “prestretch” bushings that get pressed into theflanges, uses standard fasteners. KD1, 2HT disc pack[ High Torque]

2. Coupling Size:Step 1: Determine the proper service factor from page 22.

unitized, 3, 4 or 5 bolt discs, thickerfor high torque, body fit bolts. KD11, 20, 21, 22, 4, 41, 42HS disc pack[ High Torque - Semi-unitized ]

Step 2: Calculate the required HP/100 RPM, using the HPrating of the drive and the coupling speed (RPM) as shown below:

same as HT but

HP x SER VICE F A CT OR x 100 =HP/100 RPM RPM Step 3: Select the coupling size having a rating sufficientto handle the required HP/100 RPM at the appropriate service factor.

semi-unitiz ed so thatthe disc packs may be installed outbetween close-coupled hubs.

Step 4: Verify that the maximum bore of the coupling selectedis equal to or

KD10CT disc pack[ Cooling Tower ]

larger than either of the equipment shafts.

unitized, 3 bolt disc for coolingtower couplings, stainless steel components with body-fit bolts.

Step 5: Check the overall dimensions to ensure the couplingwill not interfere with the coupling guard, piping, or theequipment housings and that it will fit the required shaftseparation.

KD33HM disc pack[ High Torque - Marine ] same as HT but

3. Check Balance Requirements Consult the Dynamic Balancing Guide on page 23 to helpdetermine if balancing is required. Verify that the maximumoperating speed does not exceed the maximum speed ratingof the coupling.The maximum speed rating does not consider lateral criticalspeed considerations for floating shaft applications.

with coated discs, for marine applications -DNV approved.LT disc pack[ Low Torque - Light Duty] non-unitized, most economical,body fit bolts. KD5, 50, 51

4. Specify Shaft Separation Note: Care must be exercised in proper selection of any shaftcoupling. The Users must assure themselves that the design of the shaft to coupling hub connection is adequate for theduty intended. Specify the required shaft separation using standard length, if possible. Verify the actual shaft separation for a replacement application.

21