Tsurumi Pumps are designed with an Anti Wicking Cable Entry System which protects and encapsulates all wire connections within a rubber mould or epoxy potting system.
This system negates the risk of water incursion into the motor caused by capillary wicking preventing damage occurring when the pump in submerged.
Small sized pumps: Rubber Mould system
Medium and Large sized pumps: Epoxy Potting system
Due to varying ambient conditions within external devices such as control panels, relying solely on overload protection will not provide the optimal operating solution.
To address this, Tsurumi have incorporated a built-in motor protection device across the full range, adopting either a Circle Thermal Protector (CTP) or a Miniature Thermal Protector (MTP) depending on the specific model required. This protects the motor against dry-running & overheating.
This built in snap action device provides the first line of defense against motor damage.
Industry leading double shielded bearings with B-10 life rating of 60,000 hours. Permanently lubricated ensuring to withstand high temperatures, providing a long-lasting and reliable performance.
Tsurumi pumps are strategically designed to offer maximum water cooling efficiency.
By incorporating a top discharge system this allows the water to pass along the motor frame, naturally creating a cooling effect.
Even in dry-run conditions, air is channeled through the discharge path cooling the motor, producing an efficient and reliable structure within the pump.
The compact design reduces the width dimensions allowing easy installation where space is limited.
Following many years of Tsurumi research & development including rigorous testing, the dual inside mechanical seal with silicon carbide face design has proven to be the most durable and effective method, providing 5 x higher corrosion, wear and heat resistance than tungsten carbide options.
Both upper and lower seal faces are isolated in the oil chamber where a clean, non-corrosive and abrasion-free lubricating environment is maintained. Compared with the water-cooled outside mechanical seal, it reduces the risk of failure caused by dry-heating and adhering matter.
The Oil Lifter is a Tsurumi developed innovative device that is positioned around the mechanical seal which provides perfect lubrication to upper seal faces even if the lubricant reduces to as low as 1/3 of the rated volume, extending the lifespan of the Mechanical Seal. The combination of dual inside mechanical seal structure and oil lifter technology prevents seal damage from dry-run conditions.
Even if the pump is orientated horizontally, seal faces remain lubricated, prolonging the pump life and ensuring maximum performance while being used at any angle.
Tsurumi has installed further protection from an additional "dust seal" which extends the life of the mechanical seal by safeguarding it from contact with abrasive particles.
This effective solution expels any abrasive particles away from the underside of the lower mechanical seal diverting back into the flow, ensuring a longer and more reliable lifetime of this crucial component.
In addition to the Dust Seal a Shaft Sleeve is also installed to increase the lifetime of the pump and extend maintenance schedules.
Conditions found within many industries such as construction and mining require pumps to be very hard wearing and durable. Tsurumi use only premium grade components and materials such as high-chrome cast iron impellers as standard in models designed for such applications.
Being highly resistant against the harmful effects of abrasive particles, it significantly reduces wear and increases the life of the pump, whilst ensuring optimum performance and reliability, reducing whole life cost of ownership.
This innovative Tsurumi component consists of a shaft-mounted agitator and a dedicated strainer. Manufactured from high-chromium cast iron the device resists wear caused by abrasive particles, and breaks down suspended stones and solids contained within the liquid being pumped.