Pulleys, Idlers, Magnets

Standard Heavy Duty Drum Pulleys

Benefits:

• Meets or exceeds CEMA/ANSI specifications
• Exclusive One Piece Rolled in Crown in all sizes help to ensure consistent, proper belt tracking h3er pulley with tighter tolerances

Construction:

• Full depth weld with reinforcing bar on single longitudinal seam featured on each Douglas Heavy Duty Drum Style Conveyor Pulley
• Crown face pulleys are furnished standard, flat face must be specified
• Douglas hubs feature full depth welds on the inside and outside of pulley end disk decreasing the likelihood
• of end disk failure due to shaft deflection and shock loads
• Douglas hubs and bushings are interchangeable with QD® or XT® style
• For approximate shipping weights please consult Factory

Options:

• Hot Vulcanized Pulley Lagging
• Shafting
• Bearing Assemblies
• Take-Up Systems
• Stainless steel construction available
• Machined face pulleys for close tolerance and better belt tracking
• Optional Douglas Keyless Locking Assemblies available

Mine Duty/Mill Duty Drum Pulleys

Benefits:

• Exclusive One Piece Rolled-in Crown ensures consistent, proper belt tracking and tighter tolerances

Construction:

• Engineered for the roughest applications, rugged Douglas Mine/Mill Duty Drum Pulleys are intended for use in critical applications where down time must be minimized
• Heavy construction reduces the likelihood of metal fatigue and pulley failure in severe applications minimizing down-time and maintenance
• Full depth weld with reinforcing bar on single longitudinal seam featured on each Douglas Mine Duty/Mill Duty Drum Style Conveyor Pulley
• Crown face pulleys are furnished standard, flat face must be specified
• Douglas hubs feature full depth welds on the inside and outside of the pulley end disk decreasing the likelihood of end disk failure due to shaft deflection and shock loads
• Douglas hubs and bushings are interchangeable with QD® or XT® style

Options:

• Hot Vulcanized Pulley Lagging
• Shafting
• Bearing Assemblies
• Take-Up Systems
• QD® or XT® Hubs & Bushings
• Machined face pulleys for close T.I.R. tolerance and better belt tracking
• Optional Douglas Keyless Locking Assemblies available.

Spiral Drum Pulley

Benefits:

• Promotes self-cleaning, helps move material to outside the pulley
• Helps smooth vibrating belt movement

Construction:

• Basic drum pulley in standard duty, Heavy Duty, Mine Duty or Extreme Duty with helically wound bar flights welded to drum pulley O.D.

Quarry Duty Drum Pulley

Benefits:

• Exclusive One Piece Rolled-in Crown ensures consistent, proper belt tracking and tighter tolerances

Construction:

• Engineered for the roughest applications, rugged Douglas Quarry Duty Drum Pulleys are intended for use in applications where down time must be minimized
• Heavy construction reduces the likelihood of metal fatigue and pulley failure in severe applications minimizing downtime and maintenance
• Full depth weld with reinforcing bar on single longitudinal seam featured on each Douglas Quarry Duty Drum Style Conveyor Pulley
• Crown face pulleys are furnished standard, flat face must be specified
• Douglas hubs feature full depth welds on the inside and outside of the pulley end disk decreasing the likelihood of end disk failure due to shaft deflection and shock loads
• Douglas hubs and bushings are interchange-able with QD®, XT® style, HE, or Taper Lock Bushings
• 1/2" to 1" rim thickness; 3/4" - 2" end disk thickness

Options:

• Hot Vulcanized Pulley Lagging
• Shafting
• Bearing Assemblies
• Take-Up Systems
• QD®, XT®, HE, Taper Lock Hubs & Bushings
• Stainless Steel Construction
• Galvanized Construction
• Shaft Mount Reducers
• Optional Douglas Keyless Locking Assemblies available

Standard Heavy Duty Wing Self-Cleaning Pulleys

• Douglas Solid 3/4" Steel round bar wing tips wear longer and retain roundness.
• Wears twice as long as other manufacturers formed flat bar or 1/4 round
• Protects underside of belt from cuts, smoother running
• Large pulleys are fitted with 1" solid steel bars for long life

Benefits:

• Meets or exceeds CEMA/ANSI specifications
• Douglas Heavy Duty Wing Style Pulleys feature exclusive minimum 3/4" solid steel round bars Increases service life
• Helps prevent wing folding damage
• Wears twice as long as other manufacturers' formed flat bar or 1/4 half-moon bar
• Protects belt bottom cover from cuts and tears
• Less belt vibration from smoother belt contact
• Special self-cleaning angle formed by gussets discharges material away from the belt and the pulley face helping to prevent material build up and belt damage from conveyed material
• Unique design creates a refined motion that helps to dislodge materials from the belt top cover

Construction:

• Crown face pulleys are furnished standard, flat face must be specified
• For approximate shipping weights please consult Factory
• Douglas hubs and bushings are interchangeable with QD® and XT® style

Options:

• Hot Vulcanized Pulley Lagging
• Shafting
• Bearing Assemblies
• Take-Up Systems
• Stainless steel construction available
• Optional Douglas Keyless Locking Assemblies available
• Stabilizing Rings

Spiral Wing Pulleys

Benefits:

• Promotes self-cleaning, helps move material to outside edges of tail pulley
• Helps smooth out vibrating belt movement

Construction:

• Flat steel bars helically wound around wing fins.

Trac-Mount™ Idler

Martin® Trac-Mount™ Idlers utilize sliding frames on a stationary base to provide an idler set that will fit in tight spaces between belt support cradles and allows easy installation and service. Trac-Mount™ Idlers are available with standard or wide base frames and utilize impact or steel rolls in CEMA class A, B, C, D or E.

Features and Benefits:

• Slide-in frames need only eight inches (203 mm) of width for 6-inch (152 mm) rolls.
• Slide-out/slide-in roller frames allows idler service without need to raise belt or remove adjacent idlers.
• Trac-Mount™ Idlers provide proper belt carriage while they stabilize the belt line to improve sealing.
• Assemblies are supplied with steel or impact rolls from Precision Pulley and Idler.

Custom Engineering

• Martin Engineering can custom-design Martin® Trac-Mount™ Idlers to meet unique application requirements. Options include steel construction, frames with adjustable angle, and rolls from alternative suppliers or other special needs. Discuss your application with a Martin Engineering representative.

Troughed Idler with Permanent Sealed Bearings

Douglas® manufactured Idlers are engineered for demanding CEMA B, C or D applications with interference fit between the shaft and the bearing for improved sealing, better stability and longer life. Douglas® idlers are available in a wide variety of configurations including: troughing, return, impact, rubber disc return, self-aligning trough, self-aligning return, scale Quality and live shaft. Douglas® idlers meet or exceed CEMA standard NO. 502-2004.

Return Idlers 4", 5" & 6" Diameter

Heavy 20mm (.787") Precision, Permanent Sealed Bearings

Self-Aligning Return Idlers 4", 5" & 6" Diameter

4" and 5" diameter Heavy 20mm (.787") Precision, Permanent Sealed Bearings

• 6" diameter Heavy 25mm (.984") Precision, Permanent Sealed Bearings

Permanent Magnetic Conveyor Pulleys

Benefits:

• Meets or exceeds CEMA/ANSI specifications
• Exclusive One Piece Rolled in Crown ensures consistent, proper belt tracking and tighter tolerances
• Automatically turns any conveyor into a magnetic separator
• Reduce operating expenses:
  • Remove potentially harmful tramp ferrous metal before it damages expensive processing equipment
  • Discharges tramp metal away from the normal product flow, improves product purity
• Permanent magnets operate without electric power supply
• Lifetime warranty on the performance of the

Constructions:

• Heavy construction reduces the likelihood of metal fatigue and pulley failure in severe applications minimizing down-time and maintenance requirements
• Full depth weld with reinforcing bar on single longitudinal seam featured on each Douglas Permanent Magnetic Conveyor Pulley
• Crown face pulleys are furnished standard, flat face must be specified
• Douglas hubs feature full depth welds on the inside and outside of the pulley end disk decreasing the likelihood of end disk failure due to shaft deflection and shock loads
• Douglas hubs and bushings are interchangeable with QD®* or XT®** style, maintain tighter holding power to the shaft and eliminate shaft damage caused by set screws or welded in shafts
• Stainless Steel Rim standard on all permanent magnetic pulleys

Options:

• Hot Vulcanized Pulley Lagging (may decrease magnetic field strength up to 30%)
• Shafting
• Bearing Assemblies
• Optional Douglas Keyless Locking Assemblies available

Self-Cleaning Permanent Magnetic Conveyor Pulleys

Benefits:

• Reduce operating expenses:
• Remove potentially harmful tramp ferrous metal before it damages expensive processing equipment
• Automatically discharge tramp metal away from the main conveyor
• Improve product purity
• Permanent magnets operate without electrical hook-ups
• Made in the U.S.A. with standard power transmission components for simple maintenance operation

Constructions:

• Heavy grade structural steel frame complete with crown face heavy duty lagged head pulley, crown face heavy duty tail pulley and slide tube belt take-ups
• Heavy duty rubber cover belt standard with hot vulcanized cleats
• Head and tail pulley guards
• Shipped complete, factory test run and ready for installation
• CLASS II shaft mount gear drive with TEFC motor for long trouble free service life

Options:

• Heavy duty rubber cover belt with hot vulcanized cleats standard
• Stainless steel or armor clad belts optional
• Two mounting options: across the belt or in-line at the discharge point of the conveyor
• Hydraulic Drive

Manual Cleaning Permanent Magnetic Separators

Benefits:

• Reduce operating expenses:
  • Remove potentially harmful tramp ferrous metal before it damages expensive processing equipment
  • Performs similar to Cross Belt Magnet except manual cleaning of ferrous metal is required
  • Improve product purity
• Permanent magnets operate without electrical hook-ups
• Lifetime warranty on the performance of the magnetic field strength
• No exposed or moving parts to wear or damage gives trouble-free service and longer life

Constructions:

• Magnetic box constructed of heavy grade first quality structural grade steel with permanent ceramic magnets
• Shipped complete and ready for installation

Options:

• Pivot arm available for easy cleaning
• Two mounting options: across the belt or in-line at the discharge point of the conveyor

Super Duty Cross Belt Separator

Benefits:

• Reduce operating expenses:
  • Remove potentially harmful tramp ferrous metal before it damages expensive processing equipment
  • Automatically discharge tramp metal away from the main conveyor
• Improve product purity
• Permanent magnets operate without electrical hook-ups
• Made in the U.S.A. with standard power transmission components for simple maintenance operation
• Up to 30% more powerful than other permanent magnetic separators
• Permanent magnets operate without electrical hook-ups
• Lifetime warranty on the performance of the magnetic field strength
• No exposed or moving parts to wear or damage gives trouble-free service and longer life

Constructions:

• Heavy grade structural steel frame complete with crown face heavy duty lagged head pulley, crown face heavy duty tail pulley and slide tube belt take-ups
• Heavy duty rubber cover belt standard with stainless steel cleats
• Head and tail pulley guards
• Shipped complete, factory test run and ready for installation
• CLASS II shaft mount gear drive with TEFC motor for long trouble free service life

Options:

• Heavy duty rubber cover belt with hot vulcanized cleats standard
• Stainless steel or armor clad belts optional
• Two mounting options: across the belt or in-line at the discharge point of the conveyor
• Hydraulic Drive