Jeffrey Flextooth® Crushers
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As the Original Equipment Manufacturer, Jeffrey offers you the best value when your machine needs a rebuild or retrofit.
Contact us for a quote to a rebuild, retrofit or upgrade your existing Jeffrey Equipment. |
For Efficient Reduction of ROM Coal and Other Friable Materials
Jeffrey Flextooth® crushers are designed for the reduction of ROM coal, for preparation plant feed, rail shipments, and feed for fine coal grinding equipment. The Flextooth® is particularly suited where a maximum reduction ratio with minimum fines is required.
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The unique crushing element (hammer) uses a cantilevered moment arm design with the movement controlled by a retainer pin. This hammer design permits the crusher to operate at relatively low speeds which minimizes fines, yet sufficient holdout force is maintained to keep the hammer properly extended.
By allowing the hammer to flex back away from the crushing circle (zone), protection against damage from tramp metal and other uncrushables is improved.
Combining the compression crushing concept of roll crushers with the high capacity of impact crushers, the Flextooth® gives you the benefits of both.
The Flextooth® also is adaptable (with standard internal modifications) for reducing a variety of medium hard friable materials.
The Flextooth® features a large feed opening and an extended lower housing. Working together, these features allow the Flextooth® to accept large lumps of ROM or frozen coal and, in effect, increase capacity. The need for secondary crushers is often eliminated.
The 40FT through the 715FT rotor discs have welded hubs which maximize key contact. Retained with lock nuts, the assembly results in an extremely rigid rotor assembly, reducing the likelihood of damage from uncrushables. |
611 Flextooth®
Rotor in Lower Housing
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Flextooth® hammer and retainer pins are interchangeable. They are made with high grade steel and heat treated for high strength and extended life.
Static and dynamic balancing of all rotors at operating RPM assures precision and repeatability. Rotor mass is concentrated between bearings. The design eliminates external flywheels and prevents damage resulting from uneven loads caused by uncrushables.
Screen bar sections are made of heat treated alloy, wear-resistant steel using welded construction. Wear rate is reduced which helps maintain product size control. Individual screen sections can be replaced, helping reduce maintenance costs.
Units can be supplied with either screen bar sections or perforated plates.
Options
- EZ Access™ technology for improved safety, faster maintenace, less down time
- Circulating oil lubrication systems
- Bearing temperature monitoring systems
- Structural steel base
- External bypass chutes
- Motor, V-Belt drive and guards
- Start-up service available
| Feature |
Function |
Benefit |
| Flextooth® Hammer |
Flexes to permit passage of uncrushables
Reduces fines because crusher operates at lower speeds |
Increased productivity
Assured performance |
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Extended Lower Housing |
Increased capacity because material build-up is reduced |
Increased productivity |
| 180º Screen Bar Area |
Provides more space for final product sizing |
Increased capacity |
| Drilled and Tapped Liners |
Reduces possibility of liners falling into crusher and causing serious damage |
Less downtime and repair costs |
| Rigid, Welded Steel Construction |
Reduction of possible harmful vibration to surrounding structure and machinery |
Lower operating costs |
| Large Inspection and Maintenance Covers |
Easy accessibility |
Reduced maintenance time and easier repairs |
| Metal Trap |
Catches and holds tramp iron and other uncrushables |
Less maintenance; more production time |
| Bearing Fill Blocks |
Easy bearing removal; rotor removal not required |
Reduced maintenance time and costs |
| Hydraulic Bearing Removal/Replacement |
Bearings can be changed without the use of special tools
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Reduced downtime |
| Bypass Chutes |
Routes flow around crusher |
Reduced downtime |
| Over 100 Years of Experience |
Design, manufacturing and application expertise combine to produce a widely accepted and proven crusher |
Reliability and dependability |
| Start-up Service |
Machine checked for proper installation and adjusted to meet specific requirements |
Assured performance |
| Operator Training |
Personnel instructed in correct and efficient operating and maintenance techniques |
Maximum productivity |
