Enclosed Track Conveyors Jervis B. Webb Company 34375 W. Twelve Mile Rd., Farmington Hills, MI 48331-5624 USA 1-888-UNIBILT FAX: 1-248-553-1253 E-mail: [email protected] www.daifukuwebb.com Quality Performance Reliability Data given in this publication are intended only to aid the engineer in preliminary evaluations and is subject to change without notice. All Trademarks™ and Registermarks ® contained in this brochure are owned by Jervis B. Webb Company or its Subsidiaries. ©2001 Jervis B. Webb Company

Across the country, around the world, there's a Unibilt Sales Facility near you! ENCLOSED TRACK CONVEYORS Designed and manufactured for quality, reliability, and low cost performance by the Jervis B. Webb Company. Most conveyors are made to look like a Unibilt conveyor, but they’re just not designed to give the reliable performance of a Unibilt conveyor. TRACK Unibilt Track is precision roll formed from patented WEBBALLOY II TM Steel– a specially formulated high strength carbon steel that is harder, stronger and designed to last longer ­ an – exclusive feature of Unibilt track. Horizontal Turns...

Unibilt Enclosed Track Conveyors The Jervis B. Webb Company created the Unibilt product line in the early 1960s to provide manufacturers of all types with a multi-purpose enclosed track conveyor. Designed and built upon principles of increasing productivity, Unibilt Enclosed Track Conveyors incorporate reliability, economy, flexibility, and simple installation either by welding or bolting. Unibilt Enclosed Track Conveyors contain many features normally associated with conventional I-Beam conveyors, plus features that are unique to this type of system, such as: • Completely enclosed chain helps...

Additional Unibilt Products Inverted Power & Free Conveyors Inverted power & free is a variation of Unibilt’s overhead Stop-N-Flow conveyor. The inverted system not only offers all the advantages of power & free, but it actually provides a cleaner product environment as well. Because the power track is located underneath the carrier, dirt and oil from the track cannot contaminate the product. Furthermore, because the product is supported from beneath, there is no carrier obstruction to the top and sides of the product. Inverted power and free is especially suited to conditions in which an overhead...

Design Procedure Horizontal Turn Horizontal Straight Conveyor Conveyor Component Symbols Hanger Location Traction Wheel Turns Right Hand Caterpillar Drive Vertical Curve Change In Elevation Elevation

Additional Unibilt Products Stop-N-Flow® Power & Free Conveyors Unibilt’s Stop-N-Flow power & free conveyor, from the Jervis B. Webb Company, provides 100% positive mechanical load control over every carrier in a system at all times. This positive control of carriers through switches, lift sections, and intra-conveyor transfers makes it completely adaptable to computer or PLC level control. Unlike a continuous-flow conveyor, power & free conveyors are not restricted by a moving chain. The retractable dog allows carriers to disengage from the power chain and stop, either individually or in groups,...

The following step-by-step procedure will illustrate general principles used in designing a Unibilt Enclosed Track conveyor system. 1 Draw Plant Layout • Draw layout to largest possible scale, for example: 1/4 = 1’-0”. • Chain attachments can be selected from the illustrations on pages 22, 23 and 24. • Make a plan view of plant area where conveyor is to e erected. Show dimensioned column or bay b lines. • Select the attachment to which the load or carrier can most easily be attached, keeping within the load ratings. • Attachments illustrated on pages 22, 23 and 24 are standard stock attachments....

Additional Unibilt Products Hand-Pushed Trolley Select Vertical Curves • Using the figure below, select a degree of incline for vertical curves that will provide a clearance between carriers when they are on incline runs. Also, to assure clearance between carriers, dimension “A” must be greater than single carrier length. • ake a plan view layout of horizontal turn as shown M in figure below. Clearance between adjacent carriers when they are negotiating turns will determine the minimum horizontal turn radius and carrier centers. Load Spacing Select Horizontal Turns • For increased conveyor life,...

Determine Required Carriers Per Minute How many parts are to be handled per minute at maximum speed? • You have designed a carrier that will carry a specific number of parts. The following typical example will best explain the proper procedure: a. Assume your production rate is 900 pieces per hour. b. Assume each carrier holds two (2) parts. Required number of carriers per hour equals 900/2 or 450 carriers per hour. Required number of carriers per minute is 450/60 or 7.5 carriers per minute. Determine Carrier Spacing • Carriers can be spaced on a minimum of 8-1/8” centers or a spacing of any...

Additional Unibilt Products Over-N-Under® Conveyors Gravity Flow Over-N-Unders Gravity Flow Over-N-Unders rely on product weight and pitching of the Over-N-Under for parts forwarding. The high end of the conveyor is the load end and the low end is the unload end. Unloading parts creates an unbalanced load across the chain, which causes the remaining parts to flow forward. As the load travels down the lower rail, the empty hooks automatically return over the top rail. Tandem Over-N-Unders Tandem Over-N-Unders are powered by modified Unibilt drives which keep the chain in synchronized adjacent...

Frictional resistance is found in the bearings of the trolley wheels, roller or traction wheel turns, and the drive unit itself. This friction figure is represented as a small percentage. It should be noted that these percentages are for average conveyors that travel under normal conditions. When adverse environmental conditions exist or the conveyor is abnormally long or complex and exceeds the chain pull capacity of one drive, a progressive chain pull computation is necessary where the friction losses are progressively calculated and accumulated through the path along the conveyor. Contact...