Schroeder Industries’ TNK series is built for exceptional durability in a wide range of working conditions.

Is a TNK right for you application? Ask the experts!

Lightweight, Ultra Durable Hydraulic Tank Packages

The TNK Series offer complete hydraulic reservoir solutions with pre-installed accessories, gauges, and air breathers. These reservoirs are engineered to last and increase your equipment’s efficiency.

With 4, 7, 12, 18, and 25 gallon options with potential for custom solutions, there’s a TNK for every system! Pair with Air Fusion Technology (AFT) to boost air filtration capabilities and even downsize your reservoir requirements.

Features and Benefits

  • Optimized for heat and air removal. The patented, integrated baffle wall on these hydraulic tanks creates settling zone for returning oil (degassing) with simultaneous cooling effect.
  • Lightweight and cost effective, but extremely durable. The TNK series is designed for high performance in a range of conditions, capable of withstanding heavy impacts and temperature extremes.
  • No risk of corrosion compared to metal hydraulic reservoirs.
  • Recyclable, more eco-friendly alternative to steel tanks. Our TNKs are made with recyclable High Density Polyethylene (HDPE), considered among the easiest plastic materials to recycle. Pound for pound, these tanks require significantly less energy to produce than a comparable product made with steel.
  • Complete hydraulic reservoir solution. Comes with vital accessories like gauges, in-tank filters, and air breathers already installed
Tank Materials:High Density Polyethylene (HDPE)
Tank Volumes:4 gal (15L), 7 gal (26L), 12 gal (45L), 18 gal (70L) or 25 gal (100L)
Operating Temperature:High Density Polyethylene (HDPE) – 20°F to 180°F (-29°C to 82°C)
Nylon (PA) – 32°F to 240°F (0°C to 116°C)
Return Line Filter:TNK4: AFT
TNK7: MTB
TNK12: ZT & GZT
TNK18: ZT & GZT
TNK25: RT & GRT
Max. Return Flow:TNK4: 25 gpm
TNK7: 35 gpm (135 L/min)
TNK12: 40 gpm (150 L/min)
TNK18: 40 gpm (150 L/min)
TNK25: 75 gpm (284 L/min)
Breather:3 µ phenolic resin impregnated paper element
Suction Strainer:100 µ wire mesh
SAE20: 20 gpm
SAE24: 30 gpm
Weight of TNK:TNK4 (AFT4): 11.5 lbs
TNK4 (AFT8): 11.5 lbs
TNK7: 16 lbs (7.3 kg)
TNK12: 21 lbs (9.7 kg)
TNK18: 33 lbs (15 kg)
TNK25: 45 lbs (20 kg)
Element Change Clearance:TNK4 (AFT4): 5.3” (134mm)
TNK4 (AFT8): 8.6” (219 mm)
TNK7: 5” (127mm)
TNK12: 10” (254mm)
TNK18: 10” (254mm)
TNK25: 9.5” (241mm)
Ultra Violet Light Rating*:HDPE = UV-12
Nylon = UV-10
Filter and Element Selection:For proper filter and element selection, information and pressure drop
calculations, please refer to the individual filters (MTB, ZT, GZT, RT & GRTB) sections in the Schroeder Hydraulic and Lube Catalog (L-2520).

Dynamic Duo: Pair TNK with Air Fusion Technology (AFT) to Maximize Air Filtration & System Efficiency

The TNK’s design already enhances degassing, and paired with filtration powered by Air Fusion Technology, air filtration is greatly augmented and system efficiency can be increased.

Air Fusion Technology, or the AFT, is engineered to maximize air filtration:

  • Compared to a standard filter, the AFT reduces air in the suction line by 20% on the first pass. Superior air filtration increases the reliability and efficiency of your equipment, saving you costly downtime.
  • The AFT’s low pressure drop and exceptional air filtration capabilities allow for smaller reservoir sizes—even downsizing by up to 60%! This creates room for additional batteries or a larger fuel tank, allowing your system to get the most out of its fuel source.
Learn More About Air Fusion Technology

Ideal for Tank Optimization

Tank Optimization is the process of reducing reservoir size, and thus fluid volume, to improve system efficiency. There are many benefits to optimizing your hydraulic tank, including:

  • Cost Savings. Downsizing a reservoir with tank optimization means less steel and oil are needed upon initial construction, and reduced oil expenses over the lifetime of the machine
  • Improved Energy Efficiency. A smaller reservoir with reduced fluid volume reduces the overall weight of the equipment, and lower fluid volume also reduces warmup time in cold start conditions.
  • Increased Machine Space. A smaller hydraulic reservoir can allow overall downsizing of the equipment or make way for additional improvements to the design.
  • Sustainability Benefits. Tank optimization reduces the carbon footprint in several ways, including reducing oil consumption.

See how this OEM saved by combining a Schroeder TNK with our Tank Optimization services!

Closeup image of stump grinding machine with TNK12 in the foreground

An OEM customer producing stump grinding machines for the forestry industry came to Schroeder Industries searching for updated filtration solutions.

An engineering analysis of their fabricated tanks found that not only were they heavy and prone to weld cracks: The volume utilization was subpar.

Further testing concluded that the existing Schroeder TNK12 would provide equivalent deaeration performance to the customer’s current tanks with a 40% reduction in tank volume.

This resulted in substantial savings on both oil and tank production cost in their stump grinder manufacturing:

Oil reduced per unit: 8 gallons Oil Reduced annually: 4,000 gallons Cost savings: $28,000 USD
Labor cost per TNK: $30 USD TNKs used annually: 500 Labor cost savings: $15,000 USD
Read the Full Case Study

Ask the experts which TNK solution is right for you!

Contact-Landing Page-TNK Series

  • Max. file size: 256 MB.