clarification needed for greasing an electric sawmill motor

[forrestM]

Hello, 

I am nearing 30 hours on my LT15 Wide (single phase 10hp electric) and it occurred to me to look into what i need to do to maintain the motor, as there are 2 grease points on it. Nothing in the woodmizer book, but the binder came with 2 pages on the lincoln motor.

based on the printed label on the motor, I believe it to be frame size 215, and 3500 rpms. 

the corresponding lube chart says for standard service (up to 16 hours a day, 104 degrees max ambient temp, indoors) that it needs to be lubed every 6 months. the closest frame size (210) says it would take .42 fluid ounces of grease. 

below that, it says motors that are name plated for belted duty only should divide the lube interval by 3. 

Name plate doesn't say anything about belted duty, but the end of the motor is turning the drive belt, isn't it? so is that belted, and would i need to grease this motor every 2 months? I'm definitely not getting anywhere near 16 hours a day on my machine, but just looking for some clarity and experience on this. 

I searched around some on here and it seems people do it once a year? i think it was @Bibbyman ? 

also... how am i going to measure .42 ounces of grease? how many ounces come out in each stroke of a grease gun?

tried looking up lincoln motors online, and couldn't find anything.

thanks! 

[Den-Den]

I can't give you exact numbers but can say that about as many motors die from over greasing as do from under greasing.  6 month interval with 2 strokes per bearing is reasonable.

[luap]

Having spent a career in an industrial facility with hundreds of motors of all sizes that ran 24/7, most of them were greased once a year with two pumps for small ones, under 10 hp to more for the larger ones. More than that and it just squeezed out and made a mess inside. Some of the larger ones had a vent plug you could remove and excess grease would come out before making a mess inside. I don't recall there being an issue with bearing failures on motors.

[muggs]

Be sure you don't have sealed bearings, which are not meant to be greased. When I rebuild a motor, I always use sealed bearings. If they do need to be greased, there is a special motor grease. All grease do not play well together.