BOL Series

BOL Series


Hydraulic Oil Cooling

Cooling Medium





Air Cooled / Brazed Aluminum

Industrial Air Cooled Brazed Aluminum Coolers

BOL/BOLR Series provides outstanding heat dissipation for extreme heat loads in a rugged, lightweight and compact design.  Available with AC or hydraulic fan motors, all feature proven brazed aluminum bar and plate core technology engineered with an aggressive turbulator that produces ultra-high heat transfer.  TTP’s exclusive TBar extruded tube cores are also available for high viscosity oil application to reduce pressure drop.  Available with two bypass options, either pressure bypass or temperature/pressure bypass.  The internal bypass option eliminates extra piping reducing costs, and helps the cooler come out of bypass faster in cold start applications.

TTP’s XSelector® sizing program can be used to help optimize the sizing of the cooler for better performance and value.*

Consult catalog for additional sizes and technical information.

Size this product for your application.

Our XSelector® program allows you to size products to help achieve optimum performance for your application. Use the online portal or try one of our mobile apps.

Try XSelector®

Configure your BOL Series

  • Bar and Plate Brazed Aluminum Core technology
  • Provides the best heat transfer per given envelope size while minimizing pressure drop
  • Air-side fin design minimizes fouling and static pressure ensuring long-term, reliable performance
  • Welded fittings/ports and manifolds ensure structural integrity
  • Standard SAE ports – NPT & BSPP available
  • Low Noise versions offer reduced speed motors for lower dBA levels
  • Customized units are available to meet your OE specific performance requirements
  • T-BAR core optional for high viscosity oils or other highly fouling fluids (See T-BAR Performance Curve)
  • Optional internal pressure and temperature/pressure bypass
  • Low noise
  • T-BAR core
  • Serviceable internal pressure and thermal/pressure bypass
  • All catalog product is available with short lead-times
  • Expert application engineers are available to select and size the right product for your application
  • XSelector® is a great tool for optimizing the sizing of TTP coolers. Check out the Apple and Android app stores to download the XSelector®App.
  • Our distributor One Status portal allows for on demand quoting of coolers and looking up order status.
  • Custom designs are available

* To register for XSelector®please go to and complete the XSelector® Inquiry form and submit.

Download the XSelector®for both Apple and Android formats by searching for XSelector®in their App Stores. You must first register for XSelector®before using it on mobile devices.

  • Maximum Operating Pressure 250 PSI
  • Maximum Operating Temperature 300°F
  • Heat Rejection from 5 HP (4kW) to 370 HP (280kW)
  • GPM (4 lpm) to 200 GPM (440lpm)
  • Mounting Feet – Steel
  • Core – Aluminum
  • Fanguard – Steel
  • Connectors – Aluminum
  • Fan – Aluminum Hub, Plastic Blades
  • Shroud – Steel
  • Petroleum/mineral oils
  • Oil/water emulsion
  • Water/ethylene glycol