What you need to know about forks for your lift truck
Assumptions and mistakes are often made when it comes to the forks on your lift truck.� Forks are the first and last thing to touch your products and materials and can often be the difference in safe and efficient handling and unstable loads and damaged product.
Here are some quick facts:
There are (4) classes of forks that have unique mounting dimensions and capacity
- Class I
- Hanger inside dimension = 13.03”
- Capacity less than 2,000lbs
- Class II
- Hanger inside dimension = 16.00” – most common!
- Capacity = 2,000lbs to 5,500lbs
- Class III
- Hanger inside dimension = 20.00”
- Capacity = 5,501 - 11,000lbs
- Class IV
- Hanger inside dimension = 25.00"
- Capacity = 11,000 - 17,500lbs
Fork Tips and Taper can vary as well. Tips can be angled or blunt. Taper options include a standard where the forward-facing 50% of the fork is angled towards the tip as well as full-taper and polished forks with a thinner profile and smooth face-surface to slide into loads such as corrugated, lumber, sheet stock, and drywall more easily.
Tip and Taper combinations are available across all the fork classes.
Here are some common things that can go wrong:
- Forks that are too short don't properly support the extent of the load and can lead to broken pallets and damaged product
- Forks that are too narrow decrease lateral stability and can lead to product tipping side to side
- Forks that are too long can extend beyond the pallet or load and lead to significant property damage or worse - employee injuries!
- Forks with the wrong tip-taper can damage product at entry or make backing out of the load challenging
- Forks that are too thin can bend, or worse break! A standard Class II fork can be commonly 1.4" up to 1.7" thick when they are brand new.
- Fork hanger welds can fatigue and crack from operators pushing product on the floor leading to product damage or employee injury
- Fork locking pins are often missing or not-functional allowing the forks to slide on the carriage, move under the load, or come loose from the carriage altogether.
O.S.H.A. is a great resource to best understand what fork conditions should be. Potential Hazards can include:
- Surface cracks
- Blade or shank are not straight
- Fork angle from blade to shank is not straight
- Difference in height of fork tips
- Positioning lock not in working order
- Fork blade or shank wear
- Fork hooks wear
- Fork marking not legible
Per O.S.H.A., a fork that shows any of these defects shall be withdrawn from service and discarded or properly repaired.
On a new standard pallet fork the shank and heel are the same thickness. The most common factor in fork replacements is wear to the heel of the fork. This occurs from day-to-day operation and friction between the floor and the fork. Over time, the fork wears away and the structural integrity is diminished - a worn fork won't hold the load the forklift is rated to lift and product damage and serious injury can occur. Fork-wear calipers used to help identify (specifically) items 2, 3, 4, and 6.
Don't assume your forks are safe. Our Technicians and Account Managers are trained on properly using the calipers to do a thorough evaluation on forks. The measurements are used to identify wear and deflection.
Don't assume you've got the right forks. We want to understand your specific application to make the best recommendation for proper fork selection.
At Forklifts of Michigan, we encourage you to Expect More. Contact us today to schedule your free and comprehensive evaluation. https://www.forkliftsmi.com/contact/
We look forward to working with you!
Updated Tuesday, July 14, 2020