Grid Coupling Selection Process

The next info is necessary when generating a Grid coupling assortment:
Description of motor or engine, the horse energy (or KW), and RPM at slowest coupling velocity though under load
Description of your driven tools
Shaft and keyway sizes plus the style of match for driver and driven products (clearance or interference)**
Shaft separation (BSE)
Physical area limitations (see Application Worksheet)
Decide what the environmental conditions will probably be, such as temperature, corrosive problems, interference from surrounding structures, and so forth.
By default, sizes 1020 – 1090 might be clearance match, sizes 1100 – 1200 will be interference fit.
** Machines all bores and keyways to meet the dimensional and tolerance specifications per ANSI/AGMA 9002-B04 for inch bores, or ISO 286-2 for metric bores.
Normal grid couplings include two grid hubs, a grid spring, plus a cover assembly. Once the shaft separation calls for a spacer design coupling, the coupling will include two shaft hubs, two spacer hubs, a grid spring, and also a horizontal cover assembly.
Formulas Employed To Determine Torque:
Application Torque (in-lbs) = ( horse power x 63025 ) /RPM
Application Torque (Nm) = ( horse power x 9550 ) /RPM
Assortment Torque = Application Torque x Support Factor
Large Peak Loads and Brake Applications
For applications where large peak loads or high braking torques could be existing, the next more data are going to be needed:
System peak torque and frequency
Duty cycle
Brake torque rating
The assortment torque formula is just like the formula shown above except that the application torque must be doubled just before applying the support factor.
Application Torque (in-lbs) = ( horse power x 63025 ) /RPM
Application Torque (Nm) = ( horse energy x 9550 ) /RPM
Variety Torque = 2 x Application Torque x Service Issue
Ways In Choosing A Grid Coupling
Stage 1: Ascertain the application torque working with the formula proven over.
Phase two: Pick the Support Factor from your charts .
For applications not displayed make use of the chart proven on the suitable. Establish the Selection Torque employing the formula shown above.
Phase three: Using the assortment torque as calculated, refer on the Effectiveness Chart
Step four: Review the utmost bore to the size selected and make certain the required bore sizes usually do not exceed the maximum allowable. In the event the expected bore size is more substantial, phase as much as the next dimension coupling and verify to see when the bore sizes will fit.
Step five: Applying the picked coupling size, evaluate the bore and keyway sizes
Stage six: Make contact with your local industrial supplier using the part numbers to place sizes with all the charts for UPC portion numbers.