Earthrings™ Installation Guide

Tools Required

Safety equipment must be worn when using these tools.

Electric drill

3mm Alan key

Pin punch or pen/marker

Small mallet (optional)

3mm Tapping tool

2.5mm or 2.6mm Steel drill bit

Pliers (optional)

Small vernier

Feeler gauge

Step 1

Clean Shaft, front of motor and grease cover, plus measure shaft size to ensure Earthring will fit.

Step 2

Place different universal brackets against motor, and choose which universal Bracket best suits the application. When Earthring is fitted it must be as close to the shoulder of the shaft as possible but not closer than 1mm. (A minimum of 1 mm gap from Earthring to shoulder is required due to shaft heat expansion). Check Steps 6 and 7 to take possible Modifications into account when choosing the correct bracket to use.

Step 3

Once the correct universal bracket is chosen, fit the brackets to the Earthring.

Step 4

Place Earthring with brackets over the shaft.

Step 5

Check Earthring is 1mm or more away from the shaft shoulder (1mm gap).

Step 6

Modifications - Bend Brackets if required, brackets are made of aluminium so that you may bend them by hand for finer adjustment and fitting of the Earthring.

Step 7

Modifications - If position not perfect you can fine tune by adding an extra washer behind the bracket or behind the Earthring to position Earthring Further forward. (You may have to use a different length cap screw).

Step 8

Position the Earthring correctly then mark in the centre of the slide-groove with a pin punch. This mark is where you will drill your hole.

Step 9

Drill hole with 2.5mm Steel drill bit.

Step 10A

Check Depth of hole with Vernier and make sure you have not drilled completely through. (If you have remove endshield or grease cover, remove grease clean bearing and Grease cover with thinners, re-grease bearing and fit Grease cover back in place).

Step 10B

Step 11

Tap Grease cover / endshield holes with 3mm Tap (0.5mm pitch). Use tapping fluid if required.

Step 12

If you happen to break the tap, do not panic, file down the broken tap until it is flush with the grease cover, then drill a new hole 3 or 4mm below or above the old hole (Bracket has slide-groove that will allow for this adjustment).

Step 13

Fasten Earthring to grease cover /end-shield with 3mm Cap screws and 1.5mm washer. Do not tighten, leave cap screw firm but slightly loose so as to be able to allow movement of the Earthring, so as to correctly position it evenly over the shaft.

Step 14

Move or tap Earthring so it is evenly positioned around shaft (1mm clearance over shaft), use feeler gauge 0.9mm or 0.8mm thickness to ensure even gap all around shaft.

Step 15A

Use 1mm Feeler gauge to check Earthring has a minimum of 1mm gap from the shafts shoulder, plus also check that Earthring is vertically straight at 90 degree angle / parallel with the shaft and grease cover / endshield.

Step 15B

Clean Shaft, front of motor and grease cover, plus measure shaft size to ensure Earthring will fit.

Step 16

Check conductivity with multi meter between Electric motor casing and Earthring, the reading should be 1 ohms or less.

Complete

Earthring installation completed.