@Daze I hope you fell batter soon. I suffer from Disc Degeneration Disease… So back pain is no mystery, but a long staying and unwelcome guest stuck in my body. Chiro should be able to help you easy the pain. I just hope it’s not pinched nerves as well / herniated discs/ broken bones…
Yeah, from what you describe it sounds like you’re doing the appropriate lifting technique in terms of body positioning.
With that said, your employer shouldn’t be asking you to lift more than one person can safely lift. If you’re being asked to manually lift 51 pounds or more by yourself for example, that would be concerning.
75 pounds is very heavy for the average person to lift in that way. You should get help to lift it on and off if you are asked to do the same thing again. Hope it clears up and you get back at it. No pun intended.