The closed nature of the present invention prevents contaminants from building up within the roller assembly and enables ease in cleaning of the roller and the bearing-support areas. FEI Conveyors offers a complete product line of overhead trolley components, systems, and accessories. Maximum amount of digits: 6. Plug end 28 thus fits tightly within and completely closes and seals the end of roller 22 leaving no cracks or crevices into which contaminants can enter and buildup. The roller assembly of claim 14 wherein each of said support shafts includes a threaded end opposite said convexly curved end, the root diameter of the threads on said threaded end being larger than the diameter of said support surface of said shaft whereby said shaft may be inserted from the exterior of said means for supporting said shafts through an aperture in a portion thereof and fastened with nuts on either side of said means for supporting said shafts. The roller assembly of claim 11 wherein said recess is intermediate said central opening and the outer periphery of said plug end, tapers inwardly from an annular opening at the outside surface of said plug end, and extends only partially through said plug end. Our standard conveyor styles from Slider Bed Belts, Plastic Modular Belts, Table Top Belts, Belt Driven Live Roller, and Chain Driven Rollers. They have sealed precision ABEC1 bearings that provide tighter tolerances, more weight capacity, and quieter operation than standard bearings. 19. Central portion 36 of the plug end forms a bottom wall, the thickness of which is typically about 0.187 inches. The outer periphery of the insert includes retaining means preventing axial and rotational movement of the bearing insert in the central opening. 
Insert 40 includes a cylindrical outer peripheral surface 41 and a central opening 42 extending entirely therethrough which is coaxial with plug end 28 and roller 22 when assembled. In addition, such organic plastic, corrosive-resistant materials are often less rigid and allow greater overall roller deflection when loaded than prior all metal assemblies. 4 is a perspective, exploded view of the roller end plug and bearing insert prior to assembly; FIG. The outer circumferential surface of the roller 22 is flush with the outer surface of flange 32. Cushioned-ride high-performance steel conveyor rollers can be used for high-speed conveying tasks. a pair of plug ends, one plug received in and closing each end of said roller, each plug having a blind central opening coaxial with said roller and extending partially through said plug end to a bottom wall; a bearing insert received in each of said plug end openings and abutting said bottom wall, each insert including a circular opening coaxial with said roller extending entirely therethrough for receiving and being rotatably supported by a cylindrical support shaft and retaining means on the outer periphery of said insert for preventing axial and rotational movement of said bearing insert in said blind opening, said circular bearing insert opening having an annular, radially inwardly convex, curved surface defining a minimum diameter and larger diameters on either side of said minimum diameter and providing a bell-mouth shape facing outwardly of said roller end, said circular bearing insert opening adapted to receive and cooperate with a cylindrical support shaft to enable low friction, low drag rotational support of said roller assembly even when deflected under load in operation; said roller, plug ends and bearing inserts formed from corrosive-resistant materials and enabling ease in cleaning of said roller. Tapered fins 44a gradually increase in height toward the center of the insert and include flat, radial faces 44b which lie in a common plane at the center of the insert. The molded PVC of plug ends would thus intimately contact fins 44a, faces 44b, edges 44c and ribs 44d to prevent both axial and rotational movement of the insert in the plug end. Referring now to the drawings in greater detail, FIGS. These ribs also engage the sides of the opening to prevent rotation. The entire assembly may be supported on legs 18 or other supports such that one end of the assembly is higher than the other and objects supported atop the series of roller assemblies 20, 60 and/or 70 suspended between rails 12, 14 will travel downhill via gravity while supported by the rollers. 2. As is best shown in phantom in FIG. The roller assembly utilizes corrosion-resistant materials, preferably organic, polymeric plastics in combination with stainless steel. Further, the prior structures have not always been well-suited to resist axial thrust exerted along the axis of the roller while also adequately rotationally supporting the roller. Conveyor rollers are used in roller conveyors to support and move items on the conveyor. This provides high strength, low friction and an excellent load rating versus its cost of manufacture and corrosion-resistance capability when compared with prior known structures. As shown in FIG. Fluids, such as water, used during any processing carried on with the conveyor, and any residual water left from cleaning the assembly, in fact, serve as lubricants for such materials. 5 is a side elevation of the bearing insert of the present invention; FIG. Adjustment of nuts 56 changes the axial extension of shafts 50 and, thus, the force with which shaft ends 53 engage walls 36.
High-durability steel conveyor rollers have a higher weight capacity and provide more resistance to impact, shock, and abrasion during conveying tasks than general purpose steel rollers. 10, where like numerals indicate like parts to insert 40, insert 40' has an integral, solid, bottom wall 46' closing and forming a blind, bell-mouth opening 42' at the inside end surface 43. 24. 10) or a separate disc (FIG. A plate 17 may underlie the extent of the rollers although the same is not necessary when braces 16 are used. The support rails 12, 14 are braced and separated by angle irons 16 welded or otherwise secured therebetween intermediate the rollers and below the top surfaces thereof.
Take up assemblies allow easy tensioning of conveyors. The rollers' smooth plastic covering won't damage these products, and it also reduces noise and provides more traction than rollers with a smooth metal surface. An important problem in the use of conveyor rollers in sanitary roller conveyor applications is the ability to prevent the buildup of contaminants such as food particles and the like in crevices and interiors of parts such as the rollers and support mechanisms. 
The standard ball bearings in these conveyor rollers roll smoothly at slow speeds and start rolling more easily than precision bearings.
That deflection causes pivotal movement of plug end 28 and bearing insert 40 about an axis perpendicular to the axis of shaft 50 which is axially and rotationally secured therein. 10 is a sectional view of a modified form of the bearing insert including a bottom wall integral and in one piece therewith; and. Note: Product availability is real-time basis and adjusted continuously. Get a glimpse into how the experts at Rolcon are able to cater to the needs of a diverse list of industries. Other previously known conveyor rollers have been made exclusively or predominantly from metal. The elimination of any recesses extending inwardly from the outer surfaces of plug end 28" eliminates further areas where contaminants might be retained. 3, received in each end of roller 22 is a circular plug end 28 including a cylindrical inner body 30 having an annular, larger diameter outer flange 32 which abuts the planar end surface 26 of roller 22.
A bottom wall is included in at least one of the roller central opening and bearing insert opening at each end of the roller to close the assembly and provide a thrust resisting surface. 
F.E.I., Inc offers many styles of gravity rollers for Wash-Down and traditional warehouse applications.
A suitable adhesive for this purpose is Nadone (Trademark of Allied Chemical Corporation), a bonding adhesive for polyvinyl chloride using a base chemical of cyclohexanone.
The rollers have standard ball bearings that roll smoothly at slow speeds and start rolling more easily than precision bearings. Central opening 42 includes generally axially extending, side surfaces which are radiused or curved and annular such that the opening is bell-mouth shaped on either end and has a minimum diameter at the center of the insert (diameter "B" in FIG. Mainly used for light to medium duty conveyors. 9 is a fragmentary, sectional, side elevation of a third modified embodiment of the roller assembly of the present invention; FIG. Also known as chain-drive live rollers, they are ideal for moving heavy items such as pallets, drums, and bulk containers. Our top-of-the-line overhead trolley components are pre-engineered based on industry standards, and are proven to eliminate high overhead costs of custom manufacturing, engineering, and delivery delays. The diameter of the shaft is closely matched to that of the minimum diameter of the insert opening and the shaft includes a convex, curved end which engages the bottom wall to resist thrust along the roller axis. The root diameter of the threads of the shaft 50 is slightly larger than the diameter of bearing surface 52 to enable insertion of the shafts through openings 54 in rails 12, 14 and nut 56 on the inside of the rail when the rails are fixed. 1 is a fragmentary, perspective view of a gravity roller conveyor utilizing roller assemblies of the present invention; FIG. As shown in FIGS. 9 and 11) to the roller interior and closed with a bottom wall on the bearing insert (FIG. Use them to replace or upgrade the existing rollers on powered conveyor systems that will carry items with delicate surfaces or finishes, such as glass or paint. Such supports do not adequately prevent wear, especially when the rollers are operated under load, and do not prevent or reduce contamination for sanitary purposes. Sprocket-ed rollers are commonly used on pallet conveyors and driven conveyors. When that happens, youll need to ask yourself some questions is it better to replace your conveyor rollers or have them repaired?
The roller assembly prevents contaminants from entrapment within the roller or associated parts and may be repeatedly washed or steam cleaned without corrosion or degradation. The roller assembly of claim 21 wherein said retaining means on each of said bearing inserts include a plurality of spaced projections which engage the sides of said blind central opening of said plug end. Alternately, a modified form 40' of insert 40 could be used with plug ends 28" or roller 22' including through openings 34a". As shown in FIG.
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The roller assembly of claim 14 wherein said central opening at each roller end is blind and extends only partially through said roller end to said bottom wall; said bottom wall being formed integrally and in one piece with said roller end; a thin disc of wear-resistant, organic polymeric plastic material in each of said central openings and abutting against the bottom wall of said opening, said convex shaft end engaging one side of said disc.
Conveyor rollers are used in roller conveyors and material transport stands to support and move bulky items such as boxes and totes.
With heavier loads, plastic deformation of the side surfaces of opening 42 provides somewhat greater surface contact but higher load capacity. CONVEYORS FOR LOADING OR TIPPING,SHOP CONVEYOR SYSTEMS ORPNEUMATIC TUBE CONVEYORS, Rollers, e.g. Lightweight aluminum conveyor rollers weigh less than steel rollers and are commonly used in unpowered (gravity-flow) conveying applications where the conveyor will be disassembled, moved, or reconfigured frequently. The rollers have standard ball bearings that roll smoothly at slow speeds and start rolling more easily than precision bearings. The rollers let loads roll from one place to another, reducing the effort it takes to move the loads. Alternately, plug ends 28 could be molded in one piece with a roller 22' such that both roller ends include closed, blind openings 34 with bottom walls 36 for receipt of inserts 40 as explained below. Some previously known roller assemblies of metal or other materials have used support inserts which move either axially or rotationally. 7.
5. Corrosion-resistant stainless steel conveyor rollers can withstand frequent washdowns, high humidity, exposure to corrosive chemicals, and other harsh conditions that might corrode steel or aluminum rollers. 12. In order to prevent such contamination, the roller conveyors are frequently washed or steam cleaned which subjects them often to caustic and corrosion-inducing fluids and materials. A roller assembly for roller conveyors comprising; a roller having a central axis and opposite ends, each end having a central opening having an interior surface and being coaxial with said roller; bearing insert means for receiving and being supported by an axle received in each of said central openings, each bearing insert means including an opening coaxial with said roller and retaining means on its outer periphery for preventing axial and rotational movement of said bearing insert means in said central opening, said retaining means including a plurality of projections having sharp edges spaced outwardly of said outer periphery of said bearing insert means, said sharp edges engaging and being embedded in said interior surfaces of said central roller openings and resisting axial withdrawal and movement of said bearing insert means; a bottom wall in at least one of said roller central opening and said opening of said bearing insert means at each end of said roller for closing the roller assembly. Non-marring conveyor rollers each have a smooth plastic covering that won't damage delicate surfaces or finishes on conveyed items, such as glass or paint. 23. Important properties of the above support arrangement will now be understood. The roller assembly of claim 1 wherein said roller has an opening at each end; a pair of plug ends, one plug end received in and closing each end of said roller, each plug end including one of said central openings receiving one of said bearing inserts; each of said plug ends including an annular recess concentric with said roller axis providing a reduced thickness area facilitating flexing of said plug to permit proper bearing contact when said roller is loaded. Use of entire stainless steel rollers and bearings is also undesirable because of the high cost and expensive machining requirements of such steel.
The rollers let loads roll from one place to another, reducing the effort it takes to move the loads. If you disable this cookie, we will not be able to save your preferences. Moreover, the metal-plastic combination of stainless steel supporting and around which a Delrin 500 CL plastic journal bearing rotates is a low-friction combination requiring little or no lubrication having along life and producing minimal wear. Whether youre looking for flange bearings, pillow block bearings, or beyond, our bearings can take the punishment of daily use and are virtually maintenance free. FEI ConveyorsDigital Marketing by Visual App. 11) or plug end 28 need not be blind but can be open (shown in phantom in FIGS. The roller designs combined with our exclusively processed Lubra-Tuf material offer an excellent alternative to conventional ball bearing rollers in harsh environments. 6 is a sectional view taken along a diameter of the bearing insert; FIG. The rollers contain standard ball bearings that roll smoothly at slow speeds and start rolling more easily than precision bearings. 4. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. The rollers let loads roll from one place to another, reducing the effort it takes to move the loads. At least one of the roller end opening or the insert at each end includes a bottom wall closing off the roller interior and providing a thrust resisting surface. Bearing surface 52 has a diameter, for example 0.312 inches, matched to be slightly smaller than the minimum diameter indicated at "B" in FIG. 8 is an end elevation of the roller assembly shown in FIG. In this case, the solid disc 66 is inserted against a shoulder 37" and abutted by insert 40 to hold disc 66 in position. These sprocketed heavy-duty conveyor rollers are used to replace or upgrade the rollers on heavy-duty chain-drive conveyors. Also, the roller, bearing inserts and bottom walls are formed from corrosion-resistant materials and enable ease in cleaning of the roller. Conveyors manufactures many styles of powered conveyors for Wash-Down and traditional warehouse applications. Also, the metal itself is subject to corrosion which further reduces its desirability for sanitary applications. 9. The edges 44c between the rounded top surface of projecting fins 44a and faces 44b are sharp and deform and engage or dig into the sides of the opening 34 in plug end 28 to both prevent axial movement or "walking" of the insert out of the opening as well as rotation of the insert around in the opening. F.E.I., Inc offers many styles of rollers for Wash-Down and traditional warehouse applications. Alternately, plug ends 28, 28', 28" could be molded around insert 40 including projections 44.
The roller assembly of claims 1, 6, 7 or 8 wherein said roller has an opening at each end; a pair of plug ends, one plug end received in and closing each end of said roller, each plug end including one of said central openings receiving one of said bearing inserts. The roller designs combined with our exclusively processed Lubra-Tuf material offer an excellent alternative to conventional ball bearing rollers in harsh environments.
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