TASKMASTER® TM8500 Wastewater Grinder
Twin-shaft CUTTER CARTRIDGE® grinder, easy service
The TASKMASTER® TM8500 twin-shaft wastewater grinder provides unsurpassed grinding performance for municipal and industrial applications, with design features that simplify maintenance and extend service life.
Key Features
Established 1918 · Made in USA · Livingston, NJ
- TM8508
- TM8512
- TM8516
- TM8524
- TM8532
- TM8540
- TM8552
- TM8560
- TM8524D
- TM8532D
- TM8540D
- TM8552D
Product Overview
Description
- Cutter Technology
- CUTTER CARTRIDGE®
- Mounting Options
- Inline, Open Channel, or Flanged
- Construction Materials
- Hardened alloy steel cutters, stainless steel options available
- Features
- High-flow design, low headloss, drop-in housing, minimal maintenance, optional shaft seals
These grinders reduce pump ragging and problems with downstream equipment by finely reducing such solids as rags, plastics, wipes, paper, disposables, fabrics, wood, bottles and much more. They are built for sewage, sludge, septage and screenings applications in either open channel, inline or gravity installations. Each unit is heavily constructed for low vibration and quiet operation.
Options
Customize this product for your application
- CUTTER CARTRIDGE® Technology
- Coarse or Finely Cut Output Configurations
- Few Moving Parts
- No Stack Retightening
- Rugged Construction
- Wet Well Frame
- Pre-engineered FRP Manhole
- Hydraulic Drive
- Stainless Steel
Cutter Cartridge Advantage
How They're Different
One-piece monolithic elements replace thin individual cutter and spacer disks resulting in a drastic increase in cutter strength. Each cutter cross-section increases from approx. 5/16" to over 3.75", all but eliminating cracking and misalignment. The precision of these cutters is unequalled. In fact, unlike typical grinders, an entire 60" tall grinder stack can be assembled without misalignment, adjustment or shimming.
With Cutter Cartridge Technology, there's no Stack Re-tightening Required!
Made from One Solid Block of Alloy Steel
Six cutters and spacers are formed from one solid block of alloy steel. The result is far higher strength than individual cutter disks and no gaps between cutters to get contaminated and loosen.
1/12th the Cutter Parts
With Cutter Cartridge Technology there are far less parts so unit reliability is greatly enhanced. With 1/12 the parts unit strength is more than doubled. With only a few cutters taking the place of banks of individual cutter and spacer disks, maintenance is made fast and easy.
Power to the Cutters
Instead of having to assemble or disassemble multitudes of cutter and spacer disks, there is the advantage of the one-piece cutter cartridge. Each cutter bore has a broad surface engaging the shaft for solid transmission of power.
No Shaft Scoring
Because there's no thin cutters and spacers, shaft scoring is eliminated. This makes disassembly far easier and eliminates a major cause of grinder failures.
Dimensions
| Model | A | B | C | HP | Weight* | Flow (GPM) |
|---|---|---|---|---|---|---|
| TEFC Channel Units (Inches) | ||||||
| TM8512 | 12.9 | 21.7 | 50.6 | 3-5 | 463 | 550 |
| TM8516 | 16.6 | 25.4 | 54.0 | 3-5 | 495 | 775 |
| TM8524 | 24.1 | 32.9 | 61.5 | 3-5 | 560 | 1,200 |
| TM8532 | 31.6 | 40.4 | 69.0 | 3-5 | 625 | 1,650 |
| TM8540 | 39.1 | 47.9 | 76.5 | 3-5 | 690 | 2,100 |
| TM8552 | 50.3 | 59.1 | 90.9 | 5 | 870 | 2,750 |
| TM8560 | 57.8 | 66.6 | 98.4 | 5 | 935 | 3,200 |
| Duplex Units (Inches) | ||||||
| TM8524D | 24.1 | 32.9 | 65.1 | 5 | 1,035 | 2,640 |
| TM8532D | 31.6 | 40.4 | 75.6 | 5 | 1,135 | 3,520 |
| TM8540D | 39.1 | 47.9 | 81.1 | 5 | 1,395 | 4,400 |
| TM8552D | 56.1 | 59.1 | 90.0 | 5 | 1,485 | 6,160 |
| TM8560D | 62.8 | 66.6 | 97.0 | 5 | 1,785 | 6,653 |
See It in Action
TASKMASTER TM8500 In Action
TASKMASTER® Cutter Cartridge Technology
Technical Specifications
- Cutter Technology
- CUTTER CARTRIDGE®
- Mounting Options
- Inline, Open Channel, or Flanged
- Construction Materials
- Hardened alloy steel cutters, stainless steel options available
- Features
- High-flow design, low headloss, drop-in housing, minimal maintenance, optional shaft seals
Need Help Choosing the Right Solution?
Our engineers have over a century of experience matching equipment to applications. Tell us about your process and we'll recommend the best fit.
Applications & Usage
Where This Product Is Used
Resources
Technical Resources & Downloads
More to Explore
Related Grinders

TASKMASTER® TM6500
Compact twin-shaft with CUTTER CARTRIDGE technology

TASKMASTER® TM8500 Inline
Inline pipeline grinder with CUTTER CARTRIDGE tech

TASKMASTER® TITAN
High-flow channel grinder with full-cut twin shafts

TASKMASTER® TM1600 Grinder
Twin-shaft grinder for rags, sludge, and biosolids

TASKMASTER® TM1600 Inline
Pressure-rated flange housing for pipeline install

DIMMINUTOR® Grinder
Open-channel comminutor with no bearings in the flow
Trusted by Industry Leaders Worldwide
Trusted Since 1918
Ready to Specify the TASKMASTER® TM8500 Wastewater Grinder?
Twin-shaft CUTTER CARTRIDGE® grinder, easy service


