Cableflow Cable Drag Conveyors

Cable drag conveyors are designed for gentle handling and installations requiring conveying in multiple planes. They can transfer fragile bulk products from single or multiple in-feed points to single or multiple discharge points over long distances with little or no damage.

Cableflow Tubular Cable Drag Conveyors are a further development of our best in class Aeroflow aero mechanical conveyors operating with reduced clearances and at reduced running speeds. Cableflow conveyors are designed for gentle material handling and for conveying in multiple planes. They can provide complete material batch transfer of bulk products from single or multiple in-feed points to single or multiple discharge points with little or no damage.

Cableflow conveyors are offered with our optional Dynamic Automatic Cable Tensioning system. This patented cable tensioning system maximizes cable life and minimizes maintenance – a key advantage over other cable driven conveyors in the industry.

Cable discs are manufactured from USDA accepted polyurethane and are suitable for temperatures up to 176°F/ 80°C.

Features

  • Minimize waste with gentle handling of fragile materials & maintain blends.
  • Optimize use of plant ‘real estate’ with layout versatility – complex 3 plane circuits, mobile designs.
  • Maximize processing efficiency with multiple inlets & multiple outlets of dry, moist or wet materials.
  • Maintain plant safety & cleanliness with dust-free, contamination-free, totally enclosed conveying.
  • Maximize ROI with fast, efficient conveying capacities up to 11 ft3/min/ .31m3/min, low energy consumption, long cable life & 24/7/365 reliability without filters or cyclones.
  • HOW IT WORKS & BENEFITS
  • APPLICATION SUITABILITY
  • CONFIGURATIONS
  • MODELS & SPECIFICATIONS
  • COMPONENTS & OPTIONS
  • CAPACITY & SELECTION
  • TYPICAL MATERIALS

HOW IT WORKS & BENEFITS

Cableflow cable drag conveyors were developed from our tried and tested aero mechanical conveyors – operating with reduced clearances and at reduced running speeds.  They are designed for gentle handling and installations requiring conveying in multiple planes.  They can transfer fragile bulk products from single or multiple in-feed points to single or multiple discharge points over long distances with little or no damage.

How it Works

A continuous loop of cable or chain with discs spaced along its length is pulled by a motor driven sprocket within an enclosed tube. Changes in direction are facilitated by bends in the tubing or by corner housings with drive or idler sprockets for tighter radii. Discharge of the product is through either tube outlets or housing outlet boxes. The cable is routed back to the in-feed point in an endless loop.

Benefits

Gentle Product Handling & Maintaining Blends

Material is fed into the pockets formed between the discs within the conveying tube. The cable and discs gently move through the enclosed circuit pulling the material along until it reaches the outlet.  This type of gentle conveying action minimizes product degradation and also maintains blends.

24/7/365 Reliability

As a worldwide industry leader in mechanical conveying, Spiroflow is unique in that we offer three types of tubular drag conveyors – Cableflow cable drag conveyors as well as Chainflow and Dynaflow drag chain conveyors.   Our engineers take the time to carefully assess your application needs so that, with proper tensioning, you can count on your conveyor to run 24/7/365.

Multiple Inlets & Outlets

The conveyor can accommodate applications with multiple outlets so that one conveyor can deliver material to multiple points.  Multiple inlets are possible as long as only one is operational at a time.

Dry, Moist or Wet Materials

Tubular drag conveyors can transfer hot, cold, wet, dry, hygroscopic or temperature sensitive materials.

No Filters or Cyclones

With tubular drag conveyors, no additional air is added to convey material so there is no excess air at the outlet to filter for dust.  Any material that is not ejected at the outlet is simply carried around the enclosed system until it is ejected at the next outlet.

Long Cable Life

All cables used in our cable assembly are constructed from MIL-spec aircraft quality steel cable.  The cable assembly is a multi-strand steel cable with one-piece USDA accepted polyurethane molded discs secured at fixed intervals.  With proper tensioning end users can expect a long cable life.

Totally Enclosed, Dust-free, Contamination-free Handling

All conveying takes place in a totally sealed tubular system which ensures the dust-free transfer of material.

Operates in Multiple Planes

Tubular drag conveyors are the only conveyors that can operate in three (3) planes.  This layout flexibility enables our engineers to design complex circuits which eliminates transfer points while using a single drive.

Low Energy Consumption

No matter how great the volume is tubular drag conveyors are very energy efficient especially when compared to pneumatic conveying systems.  Users benefit by their minimal power requirements and associated energy savings.

APPLICATION SUITABILITY

Application Suitability
PriceAlmost always less costly than an AMC, rigid screw or pneumatic conveyor
Layout Constraints
of a single conveyor
Typically up to 39 ft / 12m but depends on product density & screw speed
Multiple units can span greater distances
One bend only
MaintenanceLow maintenance
Wear only a consideration with abrasive products or if tube is excessively bent
Recommended minimum bend radii should be observed
Installation CostsLow
Energy ConsumptionMedium energy consumption
Dust Control/Air DisplacementConveyor is mechanically dust tight
No systems filters required
Residual MaterialNot 100% self-emptying
Can easily be emptied by running in reverse
DegradationLess than might be expected
Moderate shear stresses produced by screw against tube
Degradation tends not be a problem w/ most granular products like sugar
Fragile ProductsRecommend material test
Maintaining BlendsDepends on densities & material characteristics of materials in blend
Hygroscopic MaterialsRecommend material test
Moist MaterialsNot suitable
Cohesive MaterialsRecommend material test
Proscrew
Hot MaterialsVery good
With steel tubes handles material temps up to 300°F / 149°C
SludgeNot suitable
SlurriesNot suitable
Fine ParticlesVery fine particles that fluidize readily may require a flat spiral
In some cases, a center core may also be needed
Running EmptyCannot be run empty for extended periods without excessive noise & wear
Starting & StoppingCan be started & stopped under load

Check out our Conveyor Comparison Chart

This document compares our conveyor offerings based on application suitability, configurations, specifications, options & cleanability. Our engineers will assess your application needs & recommend the optimal conveyor system.

CONFIGURATIONS

Because tubular drag conveyors can operate in three (3) planes there is an endless number of layout options.  Our engineers will evaluate your application requirements and site restrictions to determine the optimal layout. Typical circuits include the layouts below, however, this is by no means a complete list.

Cableflow Cable Drag Conveyor Typical Circuits

 

Check out our Conveyor Comparison Chart

This document compares our conveyor offerings based on application suitability, configurations, specifications, options & cleanability. Our engineers will assess your application needs & recommend the optimal conveyor system.

MODELS & SPECIFICATIONS

Our Cableflow Cable Drag conveyors are offered in three (3) sizes as follows. Our engineers will access your application needs and recommend the optimal size, tube and options.

ModelTube SizeCapacity* Up To
* Throughput rates vary depending on bulk density, material flow characteristics and layout of the conveyor.
CF33”/ 75mm4.5 ft3/min/ 0.11m3/min
CF44”/ 100mm8.5 ft3/min/ 0.24m3/min
CF55"/ 125mm11 ft3/min/ 0.31m3/min

Specifications

Standard Construction & Components

  • Tubes:304 Stainless Steel
  • Cable: 304 Stainless Steel
  • Discs: USDA Accepted Polyurethane
  • Drive assembly
  • Auto cable tensioner
  • Sweeps at standard angles of 90°
  • See OPTIONS for additional available options.

Electrical Requirements

  • 3 - 5 hp / 2.2 - 3.7 kW Motor.
  • The motor is sized to application.

Pneumatic Requirements

  • 60-80 psi

Inlets, Outlets & Feeding

  • Multiple inlets & outlets are allowed.
  • Material can be metered or flood fed. This is product dependent.
  • Inlets can be fitted with baffles, lids, hoppers or agitators.
  • Custom designs available.

Check out our Conveyor Comparison Chart

This document compares our conveyor offerings based on application suitability, configurations, specifications, options & cleanability. Our engineers will assess your application needs & recommend the optimal conveyor system.

COMPONENTS & OPTIONS

Cableflow Cable Drag Conveyor Components - Sample Z Configuration

 

Spiroflow’s Cableflow tubular cable drag conveyor is designed to achieve gentle handling and low material degradation.   A series of straight and curved tubes coupled to stainless steel housings form a circuit where the product can enter and exit through tube mounted chutes.

Conveying is achieved when material enters the space between discs molded to an endless cable that is contained within the circuit.  The cable and discs are dragged through the circuit by a driven sprocket at one end.  Additional sprockets can be added to the circuit to provide frictionless direction changes and reduce the load on the system.  Continuous tension is applied to the cable via a patented pneumatically actuated tensioning assembly mounted in the 180° idler assembly included with the system.

 

Standard Components
Conveyor TubingStraight Tube Sections
Micro-welded 304 stainless steel tubes with tube compression couplings are joined to adjacent sections as required by the specified layout.
Disc & Cable AssemblyDisc & Cable Assembly includes:
  • 1/4” / 65mm stainless steel cable with polyurethane discs molded over stainless steel ferrules on 6” (15cm) centers.
  • The 5”/ 125mm conveyor has 5/8” / 1.50mm cable.
  • A slotted end fitting is used to make an endless cable.
  • The discs are made from USDA accepted UHMWPE polyethylene. Optional Hytrel discs are available for high temperature applications. See optional components below.

  • Straight Tube Sections
    Micro-welded 304 stainless steel tubes are used.
    Tube compression couplings join adjacent sections as required.

    Couplings
    Galvanized or stainless steel couplings are placed every 20 ft (6m) and at every housing, valve, and bend/sweep.
Drive HousingThe Drive Housing Assembly includes:
  • A stainless steel fabricated housing
  • Cover plate on the top face
  • Food grade natural gum rubber gaskets
  • Conveyor tube flared ends for entry and exit into the housing
  • Drive shaft
  • Gearbox mounting flange with packing seal
  • Sprocket with guides
  • Sprocket mounting hub with key and a keeper plate
  • Discharge chute transition to a spigot
Conveyor Drive MotorA 3 - 5 hp / 2.2 - 3.7 kW motor is selected based on application requirements.
Optional explosion proof drive motors are available.
180° Idler Housing & Patented Auto Tensioning DeviceA 180° idler housing & automatic tensioning device is included as part of the base conveyor.

180° Idler Housing Assembly includes:
  • A stainless steel fabricated housing
  • Cover plate on the bottom face
  • Food grade natural gum rubber gaskets
  • Conveyor tube flared ends for entry and exit into the housing
  • The idler shaft, bearing and seal is assembled in a machined aluminum housing
  • Sprocket with guides
  • Sprocket mounting hub with key and a keeper plate
  • Clean out chute with a stub to connect to dust extraction/vacuum

  • Automatic Tensioning Assembly (US Patent 7,798,313)

    Spiroflow’s patented automatic tensioner applies a constant pre-load to the conveyor’s cable and disc assembly and compensates for the natural change in length of the cable during its life cycle.

    A pneumatic actuator anchored at one end applies a linear force to the free moving Cableflow housing mounted on 2 linear bearings. A manually adjustable precision filter regulator is employed to ensure that there is never too much pressure applied to the actuator and this limits the linear force (tension) applied to the conveyor.
    The pneumatic circuit prevents the total loss of linear force and tension if the air supply is interrupted.

    Includes:
    • Mounting hardware
    • Pneumatic Actuator with check valve
    • Precision Regulator and lockout valve
    • Pneumatic hardware and airline
Gravity Inlet ChuteA gravity inlet chute is included in the base model conveyor. Optional tube mounted inlets are available. See optional components.
Gravity Discharge ChuteA gravity discharge chute is included in the base model conveyor. Optional tube mounted outlets are available. See optional components.
Options
90° Corner Housing Assembly90° Corner Housing Assemblies are included as necessary for the end user’s application requirements & layout.

90° Corner Housing Assembly includes:
  • A sheet metal fabricated housing
  • Cover plate on one face
  • Food grade natural gum rubber gaskets
  • Conveyor tube flared ends for entry and exit into the housing
  • Floor support bracket
  • Idler shaft, bearing and seal assembled in a machined aluminum housing
  • Sprocket with guides
  • Sprocket mounting hub with key

Clear Inspection PortA clear inspection port is a helpful component to most conveyor layouts.
The inspection port is 18” / 450mm) long with a 10” 250mm viewing length. The tube is constructed of clear polycarbonate with carbon steel (mild steel) or stainless steel tube joiners. It is located in the conveying circuit to allow visual access to the system.
Hinged Corner Housing Access CoverA hinged corner housing access cover is available with a compression cam latch.

It includes:
  • NEMA 4 safety switch or Atex equivalent switch
  • Mounting brackets
XP Safety SwitchAn XP rated safety switch is available for the hinged cover (NEMA 7) UK equivalent: Atex version
High Temperature Cable AssemblyA high-temperature cable assembly utilizing Hytrel discs is an available option for materials up to 300°F (149°C).
90° Tube BendsTube bends are utilized based on the end user’s layout requirements.
The tube bend radius varies based on the size of the conveyor:
  • 3” / 75mm conveyor: 36” / 900mm bend radius
  • 4” / 100mm conveyor: 48” / 1m bend radius
  • 5” / 125mm conveyor: 60” / 1.5m bend radius

  • NOTE: Tube bends are also available 15°, 30°, 45° & 60° angles. Our engineers will recommend the optimal layout for your application needs and site constraints.
Tube Mounted InletA tube mounted inlet with adjustable baffles can be mounted in the conveying circuit. Multiple inlets can be used in the circuit.
Inlet LidAn inlet lid with a spigot includes a 1” / 25mm square weldmesh in the spigot to prevent an operator from access moving parts. It also includes high flow exhaust.
Tube Mounted OutletA tube mounted outlet can be mounted in the conveying circuit and multiple outlets can be used in the circuit. The outlet is always open.
Transition ChuteA transition chute is a rectangle to round transition chute with 60° walls and is available in 3 sizes: Ø6” / 150mm, Ø8” / 200mm or Ø10” / 250mm
HopperA 3 ft3 / .08m3 hopper can be included and is flanged to suit the conveyor inlet.

It includes four (4) floor-mounted height adjustable feet for leveling.

Alternatively, Spiroflow offers a comprehensive range of bag dump stations or bulk bag unloaders (with or without integral dust extraction or a connection to a central dust extraction system) to facilitate the dust-free loading of material into the conveyor. We can recommend additional equipment to suit your specific requirements.
Hopper LidA hopper can be equipped with a lid that includes a spigot and dust port with dust sock and worm gear clamp.
Dust HoodA dust hood can be added to the hopper. The bolt in place dust hood has a clear strip curtain with vertical sides and a back wall. It includes a 6” / 150mm spigot to connect to your dust extraction system.
Electric VibratorAn electric vibrator can be mounted to the hopper to assist in material flow.
Pneumatic VibratorA pneumatic vibrator can be mounted to the hopper to assist material flow.

It includes a manual on/off pneumatic switch and filter regulator with air fittings.

(Automatic operation can be achieved by replacing the manual pneumatic valve with an electric solenoid valve and integrating it into a control panel.)
Hopper AgitatorA hopper agitator assembly can be installed between the hopper and the conveyor inlet.

It includes:
  • Sheet Metal Body
  • Shaft with Paddles
  • Seal Block
  • Gear Motor 1/3 hp / .25 kW Motor
Level SensorLevel sensors are available for a variety of area classifications.
Air PurgeAn air purge blows material off of the cable & disc assembly as it moves through the outlet housing. This option is not available on the tube valve.
Clean Out DiscA clean out oversize(d) disc is available to assist in cleaning the conveyor.

It includes:
  • Urethane Disc 40 Shore A scale
  • A mounting disc made from UHMWPE & stainless steel hardware attaches the clean out disc to the cable.
Tube Mounted Outlet ValveA pneumatically actuated tube mounted outlet valve is available.

It includes:
  • Stainless Steel Housing
  • Rotating Tube with cut out for material exit
  • Gear from Delrin material
  • Pneumatic Actuator
  • Tube Bearing from UHMWPE
  • Solenoid Valve 24VDC Coil
  • Pneumatic Hardware
Tube Valve Transition ChuteA transition chute is a rectangle to round transition chute with 60° walls and is available in 3 sizes: Ø6” / 150mm, Ø8” / 200mm), or Ø10” / 250mm.
Rotation SensorA rotation sensor assembly is located on conveyor idler shaft to indicate that the system is operating. This requires integration with controls.

It includes:
  • Motion pickup flag
  • Sensor mounting bracket and integral guard with access cover
  • Inductive proximity sensor for safe area application (non-hazardous)
Grounding Lug SystemStatic grounding (earthing) is available. Grounding wire and wire connectors are supplied to attach component parts of the system. All connections are terminated at the grounding lug for the end user to attach to the ground.
ControlsComplete controls are available with or without a VFD.

Check out our Conveyor Comparison Chart

This document compares our conveyor offerings based on application suitability, configurations, specifications, options & cleanability. Our engineers will assess your application needs & recommend the optimal conveyor system.

CAPACITY & SELECTION

Cableflow Tubular Drag Conveyors can operate up to 140 ft/min (43m/min) depending on material characteristics & layout.

The capacity charts below allow you to roughly estimate the size of the conveyor and the speed based on the throughput requirements in cubic feet/minute (cubic liters/min). The horizontal lines represent the velocity at which your product will pass through the conveyor. The vertical lines indicate the volumetric throughput rate in liters per minute. The diagonal lines are the sizes of the conveyors available.

But don’t think you have to figure out which conveyor will work best for your application.  Our sales engineers can do that for you!

Tubular Drag Conveyor Capacity Charts

How to Use the Capacity Charts

  • Based on your material’s bulk density, calculate the required conveying rate in feet/minute or liters/minute. Locate the amount required on the horizontal scale.
  • Move up the vertical line and note where it intersects with one or more diagonal lines. Each intersection point indicates a possible conveyor size.
  • From each intersection point, move left horizontally all the way to the vertical scale, indicating the conveyor cable speed.

There are many factors that enter into the tubular conveyor selection process. Beyond the mechanical selection described above, we carefully consider the physical characteristics of the material to be conveyed and the equipment duty cycle.

Tubular Drag Conveyor Selection Guidelines

  • The Cableflow conveyor can operate at speeds up to 140 ft/min / 43m/min.
  • It is generally advisable to apply a larger conveyor at a slower cable speed if your material has sluggish flow characteristics, is sticky, abrasive or if the equipment operational duty cycle is extensive.
  • Smaller conveyor sizes and faster cable speeds are usually selected when the material is free-flowing and non-abrasive and/or the equipment duty cycle is low.
  • Future capacity requirements should be considered. It may be prudent to install a larger conveyor now at a lower cable speed.  You can increase the cable speed later to accommodate a higher capacity. This can be done with the use of a variable frequency drive or gearing change.
  • Surges and uneven feed conditions should be considered. Surge hoppers may provide more constant feeding and may enable the use of a smaller conveyor.

TYPICAL MATERIALS

Cable drag conveyors can gently transport a multitude of materials.  Here is a list of materials generally considered for this type of conveyor.  Our engineers will carefully assess the properties of your material and likely perform a material test to ensure your cable drag conveyor performs exactly to your expectations.

Food

  • Almonds
  • Bacon Bits
  • Bakery Products
  • Baking Soda
  • Barley
  • Basil, Dried
  • Beans, Dried
  • Black-eyed Peas
  • Brazil Nuts
  • Breadcrumbs
  • Cashews
  • Cereal Flakes
  • Cereal Grains & Nuggets
  • Cereal Shapes
  • Cereals
  • Chickpeas
  • Chives, Dried
  • Chocolate
  • Cinnamon
  • Cocoa
  • Coffee Beads, Ground
  • Coffee Beans, Whole Bean
  • Coffee, Freeze Dried
  • Coffee, Instant
  • Coffee, Roasted
  • Coriander
  • Corn
  • Couscous
  • Cumin
  • Dill Seed
  • Eggs, Dehydrated
  • Fava Beans
  • Filberts
  • Flax Seed
  • Flour
  • Fruit, Dried
  • Garlic Powder, Dried
  • Ginger, Ground
  • Grains
  • Hops
  • Kidney Beans
  • Lentils
  • Lima Beans
  • Lysine Chunks
  • Macadamia Nuts
  • Malt
  • Marjoram
  • Mint, Dried
  • Mustard Seed
  • Nutmeg
  • Nuts
  • Oats
  • Oats, Burned
  • Oilseeds
  • Oregano, Dried
  • Paprika
  • Parsley, Dried
  • Pasta
  • Peanuts
  • Pecans
  • Pepper Corns
  • Pepper
  • Pigment Powders
  • Pinto Beans
  • Pistachios
  • Rice
  • Rosemary, Dried
  • Saffron
  • Sage
  • Seeds
  • Sesame Seed
  • Snack Food Products
  • Snap Peas
  • Soy Beans
  • Spices
  • Split Peas
  • Tea
  • Thyme
  • Titanium Dioxide Powder
  • Tree Nuts
  • Vegetable Scraps
  • Vegetables, Dried
  • Vegetables, Frozen
  • Walnuts
  • Wheat

Agriculture

  • Atrazine
  • Bird Seed
  • Carrot Seed
  • Cottonseed
  • Cottonseed, Coated with Starch
  • Feather Meal
  • Fertilizer
  • Grass Seed
  • Lime
  • Limestone Pellets
  • Pesticides, Granular
  • Tobacco
  • Tomato Seed
  • Waste Cotton

Animal Feed

  • Animal Feed
  • Dog & Cat Food, Dry
  • Dried Feed Grade Egg Product
  • Feed Corn
  • Fish Food
  • Peanut Splits
  • Pet Food
  • Pet Food Chunks
  • Pet Food Kibble
  • Pet Food Pellets

Plastics & Rubber

  • Plastic Flake
  • Plastic Fluff
  • Plastic Pellets
  • Plastic Prills
  • Plastic Regrind
  • PVC, Pelletized Mix
  • PVC, Virgin
  • Rubber, Ground
  • Rubber, Including Fluff

Chemicals

  • Aluminum Oxide
  • Barium Metaborate Monohydrate
  • Boric Acid
  • Carbon Black Powder, Prills
  • Pigment Powder
  • Titanium Dioxide Powder
  • Urea Prills

Other

  • Acordis Cellulosic Fiber
  • Cat Litter
  • Cellulose Flock
  • Detergent Powder
  • Diatomaceous Earth
  • Fiberglass, Chopped
  • Glass Microspheres
  • Ground Paper Product
  • Kaolin Clay
  • Metal Powder
  • Paper, Shredded
  • Silica Sand
  • Sodium Bentonite
  • Water Softener Pellets
  • Wax Pastilles
  • Wood Chips
  • Wood Pellets