Sadler Conveyor
Gravity Conveyors

Roller, Wheel, Ball Transfer, 
Extendible, Turntables & Transfer Cars

Roller & pivoting wheel conveyors
SIC 4200 - Air Freight Sortation Center
Roller & pivoting wheel conveyors

A full range of gravity or non-motorized conveyors for applications where the rates are usually low & do not justify the installation of a powered conveyor system.


Table of Contents
Sadler Gravity Conveyors

 • Sadler Roller Conveyors 
 • Sadler Wheel Conveyors 
 • Sadler Ball Transfers & Tables 
 • Sadler Supports & Racks 
 • Sadler Converging and Diverging Sections 
 • Sadler Special Purpose Conveyors  
    (Turntables, Transfer Cars,
    Extendible Roller Conveyor)
 • Sadler Accessories 

Sadler Roller Conveyors

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Rollers: Portable, light, medium and heavy duty steel rollers have spring-loaded hexagon axles for easy removal from or insertion into frame rails and prevent wear from axle rotation. Standard BFR (between frame rails) widths are 15", 21", 27", 33", 39", 48", and 60". Other widths to 120", on request. Plastic, stainless steel and galvanized rollers made to order. Capacities are 15" BFR and decrease as length increases.

  • Portable - Aluminum no. 4146: 1.4" dia., 70 lbs. capacity for portable applications where weight or rust-freedom is important.
  • Light Duty - Steel no. 4141: 1.4" dia., 100 lbs. capacity for light duty applications where conveyed items are short, requiring close roller spacing.
  • Medium Duty - Steel no. 7197: 1.9" dia., 300 lbs. capacity .Sadler's most popular roller with excellent balance between cost, strength and ability to withstand normal abuse.
  • Heavy Duty - Steel no. 11251: 2.5" dia., 600 lbs. capacity. Outstanding for pallet or skid handling. Takes heavy weight and shock loading.
  • Extra Heavy Duty - Steel no. 16351: 3.5" dia., 2500 lbs. capacity. A precision bearing-fitted rugged roller for severe operating conditions - container, pallet, skid and steel handling.
  • Lengths and Ends: Rollers are measured in BFR lengths, not face lengths. All Sadler rollers have slightly swaged or straight ends.

Roller Frame Sections: Standard BFR widths to match roller lengths. Hexagonal holes punched on 1.5" centers to allow changes in roller spacing. Capacities (dynamic) based on uniformly distributed load on a graded line, with supports on 10' centers - quadruple with supports on 5' centers.

  • Straight: 10' and 5' long 2 rail frames. Others made to order.
  • Portable - Aluminum no. E25: 2.5" channel, 20 lbs./ft. capacity for applications where rust-free or sanitary conditions prevail and for light package handling.Aluminum No. E25: 2.5" channel, 20 lbs./ft. capacity - for applications where rust-free or sanitary conditions prevail, and for light package handling.
  • Light Duty - Steel no. F25: 2.5" channel, 40 lbs./ft. capacity . Conveys light packages. Also used in temporary installations with T type floor supports.
  • Medium Duty - Steel no. F35: 3.5" channel, 80 lbs./ft. capacity. Offers good balance between cost and ability to handle a variety of package sizes and weights. The lightest frame recommended for permanent installations.
  • Uni-Flo - Steel no. B52: 5.25" open box channel, 150 lbs./ft. capacity. Normally used for powered conveyors . Also for gravity applications where clean appearance is important.
  • Heavy Duty - Steel no. S45: 4" channel, 200 lbs./ft. capacity. For heavy weight and shock loading caused by product and occasional misguided mobile equipment.
  • Extra Heavy Duty - Steel no. S68: 6" channel, 400 lbs./ft. capacity . A rugged frame preferred by many primary industries because of heavy loads and its ability to withstand damage from mobile plant equipment.
  • Curves - 90° and 45°: 2 rail . Others made to order. Standard radius: 31.5" to inside of inside rail. Standard roller center: 3" on inside rail. Additional supports at midpoint of curves ensure stability - 1 up to 33"; 2 from 36" to 48"; 3 over 48" BFR..
  • 2 Rail Curves: Available with inside rail roller centers of 1.5" for Portable and Light Duty frames. When package orientation is important, a 3-rail is preferable to a 2 rail curve. The differential action of the 2 lanes of rollers, allows the inside edge of a package to travel at a slower speed than the outside edge, permitting it to have a similar alignment when leaving as it did when entering the curve.
  • 3 Rail Curves: BFRs are slightly wider than 2-rail curves, due to the thickness of the third or center rail, nominally .25". Standard nominal BFR widths are twice the standard 2 rail BFR.

Sadler Wheel Conveyors

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Standard BFR widths:. 15" , 21" and 27" Centers: 3". Special widths and 1.5" centers available on request only. Capacities (dynamic) based on a uniformly distributed load on a graded line with supports on 10' centers, quadruples with supports on 5' centers.Straight, 10' and 5' long ,2 rail frames. Others made to order.

Wheels: Aluminum or zinc-plated steel. Hardened steel balls, cone and raceway in pressed shell .625" face, .94" hub length, not greased.

  • Aluminum - no. 4: 1.9" dia., 40 lbs. capacity. For applications where lightness and rust-free wheels are essential.
  • Steel - Zinc Plated no. 8: 1.9" dia., 80 lbs. capacity. Have greater carrying capacities, durability and economy over lightweight aluminum.

Wheel Frame Sections: Standard BFR widths: 15", 21" and 27". Centers: 3". Special widths and 1.5" centers available on request only. Capacities (dynamic) based on a uniformly distributed load on a graded line with supports on 10' centers, quadruples with supports on 5' centers.Straight, 10' and 5' long,2 rail frames. Others made to order.

  • Portable - Aluminum no. E25: 2.5" channel, 20 lbs./ft. capacity . For applications where rust-free or sanitary conditions prevail and light packages are been handled.
  • Light Duty - Steel no. F25: 2.5" channel, 40 lbs./ft. capacity . For conveying light packages, Also used for temporary installations with T type floor supports.
  • Wheel Rails - Steel no. F25: 2.5" channel, 20 lbs./ft. capacity. Used when distance between rails must be altered quickly to suit changing package widths.
  • Curves - 90° and 45°: others made to order. Standard radius: 31.5" to inside of inside rail . Centers: 3" on inside rail. For stability use one support in the center of curve. The differential action of wheels, allows the inside edge of a package to travel at a slower speed than the outside edge, permitting it to have a similar alignment when leaving as when entering the curve.
  • Wheel Patterns: Staggered: for small packages 1.5" centers are used. This will double the wheels per ft. for the same pattern no. Laned patterns are not available on 1.5" centers because the wheels would touch.

Sadler Ball Transfers & Tables

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Ball Transfers: Heavy loads can be shifted, rotated, transferred and conveyed in all directions easily with ball transfer units. The large ball rotates on a bed of small hardened steel balls contained in a steel cup. Applications requiring their use in an inverted position (ball pointing downwards) are not recommended.

  • Surface Mounted: Intermittent Service no. BT25, 55 lbs. capacity, zinc plated finish. An economically priced commercial unit for clean, light duty conveying.
  • Flush Mounted: Continuous service nos. BT22-45, 175 to 1100 lbs. capacity - bright steel finish. These precision industrial units are protected against fouling and penetration of dirt and dust by a felt seal. Removable cover for occasional cleaning.

Ball Transfer Tables: These tables designed to match standard BFR widths, may be mounted either between the frame rails or separately, if they are self-contained units.

  • Frame Mounted -Square Pattern: For general duty service the surface-mounted balls are used in the standard square pattern. Centers, lengthwise and crosswise, are normally the same as the rollers. Standard lengths: 2 increments.
  • Self Contained - Staggered Pattern: for rugged service, the flush-mounted balls are used in square or staggered patterns. Staggered pattern has one less ball every second row.

Sadler Supports & Racks

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Portable T Type Floor Supports: Shown here are 3 Sadler normal-duty 500 lb. capacity portable T type floor supports, used with H&P connectors on F25 frames.

  • No. T-1524 is the shortest (ground to top).
  • No. T-2342, with optional casters, is medium height and the most in demand;
  • No T-4178, the tallest. Height is easily adjustable. Swivel casters of 210 lbs. capacity and 3" diameter fit the feet.

Permanent H Type Floor Supports: these 3 Uni-Flo normal-duty 1500 lb. capacity permanent H type floor supports, used with F35 and B52 frames, are in great demand.

  • No H-1524 the shortest;
  • No. H-2436 medium height;
  • No. H-3648, tallest. Top plates adjust to 30° from the horizontal serving as connectors and supports for adjoining conveyors.
  • Standard BFR widths: match roller sections - standard heights, to floor: 0-10" (fixed), 0-15", 15-24", adjustable, 24-36", 36-48" etc to 120" in 1 Ft increments.
  • Heavy duty: supports for weights in excess of 1500 lbs. are available in structural steel.
  • Swivel casters with 4' to 8" diameter wheels and floor lock are also available. End view of section shows how butt plates are used when joints are not supported.
  • Auto Flo-Raks offer front selection live storage, rear replenishment for faster order selection, increased storage capacity, visual supervision and improved housekeeping. Flo-Raks permit positive stock rotation and visual inventory control.

Sadler Converging and Diverging Sections

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Converging Sections: these converging sections are used for converging or merging 2 conveyor lines into 1 - either roller as shown, or wheel. When 3 or more lines are to be merged, a pivot switch is used.

  • The center rail of these sections is slightly raised to bank the load away from the opposite rollers, reducing sliding friction. The converging operation improves when there is no line accumulation, and the section’s decline is exaggerated.
  • Converging sections are not designed for reverse (diverging) applications.
  • Handing: always viewed in the direction of flow.
  • Left hand diverging = Right hand converging
  • Right hand diverging = Left hand converging.

Diverging Sections: these sections are used to convey a product from 1 main line to 1 or more secondary lines.

  • Motive power is necessary to overcome the tendency of a product to travel in a straight line.Powered equipment is used for efficient automatic diverging.
  • For random diverging (manually performed), the 90° spur shown in the converging section is used in conjunction with a plow.
  • In continuous diverging (products conveyed in groups), a Tumbler switch 45°/45°, Rollover switch 90°/straight, and 2-way Pivot switch are necessary. Both tumbler and rollover switches require a minimum clearance of 1/2 the BFR + 2" below the conveyor.

Sadler Special Purpose Conveyors

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Turntables: This unit is used to rotate the item conveyed to perform some task or to divert it from 1 line to 2 or more lines. The load is carried by the circumferential rigid casters not by the central pivot point. Carrying surface is a standard roller section and turning action is manual. A gap of up to 12" at each end, between the turntable and adjoining roller section, is required. Capacity is a nominal 250 lbs.

Transfer Cars: Receives items from a production line and transfers them either across a passage which cannot accommodate a permanent conveyor or to a storage area of several parallel lines of conveyors, each for a different item. This mobile unit is standard equipment in most paper converting mills. The standard length: 10'; minimum height 71/2" to top of rollers; BFR widths: 48" or 60". The 5" diameter wheels are grooved on 1 end, flat on the other. The push handle is 36" high, 8 wide and mounted on 1 side of the car. Capacity is a nominal 2000 lbs.

Extendible Roller Conveyor: Sadler Extend-A-Veyor is used in shipping and receiving operations such as warehouse terminals and distribution centers. Mobile, easily adaptable to varying truck lengths and heights. Capable of handling large volumes in short periods of time. Designed to use inside a truck, on a dock or in between. Legs have 4 or 6" diameter swivel casters enabling the conveyor to move to the work. Extends or retracts easily. 5 standard models which extend from 12-30 ft and from 17-70 ft.

Sadler Accessories

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Gates: These are 2 simple and efficient Sadler gates.

  • Pivot Support Type: For wide or double gates or at the end of lines. Maximum length 30".
  • Spring Balance Type: Lifts gates easily .Eliminates the need for heavy, awkward counterweights. Maximum length 30".

Guards: Effectively prevents products from falling off the conveyor.

Stops: Control the flow or movement of products at desired positions along the flow system.

Floating Roller Limit Switch: Provides an electrical signal indicating the presence or absence of a product at a specific point in the system.

For further details please refer to the brochure.

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