WWMH Gravity Conveyor Rollers | Replacement Rollers
Warehouse Rack & Shelf LLC is proud to announce that we are offering a new line of heavy-duty replacement gravity conveyor rollers that are new to the market. WWMH is the manufacturer and their first objective was to develop the highest quality, lowest priced galvanized standard 1.90″ gravity roller tubing to create gravity conveyor rollers that meet ASTM standards. These are manufactured in the cleanest, most automated rolling factory in the world with the newest equipment that insures the highest quality.
Secondly, they developed a conveyor bearing that can satisfy the Amazon’s and Walmart’s for high-speed application offering outstanding noise reduction. The bearings are special, they are an ABEC-1 bearing that has an anti-static polypropylene feature in them. So, when you have miles and miles of conveyor lines running that traditionally produce a static, the material we use in these roller bearings will prevent that static. You won’t get any shocked if you touch that conveyor line and it keeps the lines very silent.
If you’ve ever been in a large distribution facility with conveyor systems rolling, the noise decibel levels will hurt your ears – they are so loud. Our conveyor roller bearings reduce, almost eliminate this unnecessary noise level.
So after accomplishing these major achievements, what we are doing is branching out. After creating the 1.9’s we are developing the 2.5 for heavier loads. We are also manufacturing the 1.375 and all the other increments that are needed in the US industry.
That’s just the gravity side of the business. We are also doing tapered rollers for when you have 180 degree turns. We are also doing pulleys and bearings. If you are dealing with any kind of conveyor customer, they all use pulleys. Pulleys are traditionally a very high-cost type of system. So, if you are conveying anything with a belt roller then you are using conveyor pulleys.
Our tapered rollers are bigger on one side than the other. Tapers can be made from a mold or be spin formed on the lathe. The mold is usually what is called “Hammering method” very loud but quick. The spin method usually takes longer and with that type of machine you can make lots of different sizes, on molds “hammering method” you can only make one size. Tapers can be made by two methods: spun formed and mold form. We go with a nominal 2.5” on large end and we are pushing that metal down to the small end in a lathe, in a spin method. So that metal is getting pushed all the way down to about 1.9 on the small end. And we are keeping the .010″ per foot up to 3 feet, total max runout .030 run out true as well, so we will hold a 10,000 run out per foot up to 3’ on all tapered rollers so you are going to have a nice steady flow when you are going around a turn. Boxes will have no bouncing whatsoever.
The groves on our tapered conveyor rollers can be made any way the customer wants. They are standard depth wheels for tapered rollers and gravity rollers. Standard straight gravity rollers usually use a 1/8” radius wheel, .2 depth. For tapered rollers we go a little bit bigger to accommodate the taper, so the bands are a ¼” radius and a ¼” depth. Those groves can be placed anywhere you like. Right now, we are quoting them as standard for MDR which in the conveyor world is a motorized driven roller. A lot of companies will keep their grooves to MDR standard because they like to use MDR to help convey the whole conveyor line.
Commonly asked questions:
What is the purpose of the tapered conveyor roller? The purpose of the taper is for turns so when you are conveying in a straight line you use straight conveyor rollers but when you are going into a turn you use tapered rollers. When you go into the turn you need a slight taper which is determined by how big the packages are. We’ve done tapered conveyor rollers in lengths up of 48” in length where it’s 4” on one end and 1.625” on the small end where you have at least 40” of roller that is being used to convey boxes. It just depends on your application.
Are your conveyor rollers being used for replacements or are they going into a new system? Both. Our quality conveyor rollers are being used by OEM manufacturers and used by end users to replace damaged rollers in existing conveyor systems. In many cases they are an upgrade that will give your conveyor systems longer life and reduce maintenance costs down the road.
Are there standard common sizes of straight and tapered conveyor rollers? Yes, there are standard sizes including 12”, 16”, 22”, 28” and 34” lengths common commodity size rollers. It often depends on who the OEM that made them. Some OEMs will purposely use odd sizes like 15”, 21”, 27” just to get you to go back to them. Keep in mind we can manufacture conveyor rollers to any length you want if you can wait 12 weeks.
What is the most popular size of conveyor roller? The most popular conveyor roller offering is the 22” BF 1.29 straight conveyor roller with or without groves.
What is the purpose of the groves on rollers? If it is a belt powered conveyor system, the belts fit into grooves to turn them. MDR conveyor systems all have conveyor rollers with belts. MDR stands for Motorized Driven Rollers. If you are running a very long line of conveyor rollers you may have a belt drive roller on one end, the next 10 rollers might be regular rollers and the next roller you will have another motor drive roller which helps keep the flow of straight flatline rollers rolling.
Do we stock conveyor rollers? Yes, we intend to stock standard sizes starting in Chicago and eventually branching out to Dallas and San Bernardino, CA.
Tip from the Pro’s: We are best utilized for replacement rollers. We have found that in-order to design and layout a new system you need feet on the ground and tremendous knowledge of conveyor design engineering. Usually, we request customers send us samples of their conveyor rollers and we can measure them and determine which replacement rollers are required.
