BN Series - Submersible Smashing Cutter Pump
The Tsurumi BN Series is a heavy-duty submersible wastewater pump engineered for applications where clogging is a constant challenge. Its exclusive smashing cutter mechanism efficiently handles solids and long fibrous materials, while rugged construction and proven Tsurumi technologies deliver dependable performance, extended service life, and simplified maintenance. Ideal for municipal, commercial, and industrial wastewater applications where reliable solids handling is essential.
Engineered to Shred the Toughest Solids
The BN Series features Tsurumi’s unique Heart-shaped Suction Cover and semi-open channel impeller with an extended rotating guide. This design crushes and shreds solids and fibrous materials more effectively than conventional cutter pumps, while improving cutting performance and preventing clogging. It ensures smooth waste transfer and delivers reliable, high-efficiency operation.


HEART-SHAPED STATIONARY SUCTION BLADE: Crushes and shreds solids for improved solids handling.
ROTATING LEADING BLADE: Works with the stationary blade to efficiently cut solids and fibrous materials.
EXTENDED ROTATING GUIDE: Directs solids into the cutting blades to reduce clogging and improve reliability.

SECTIONAL VIEW

- ANTI-WICKING CABLE ENTRY: Prevents water from entering the
motor through the cable, protecting the motor from moisture and
condensation. - MOTOR PROTECTOR: Built-in thermal protection automatically
shuts off the motor during overheating or overload conditions to
help prevent damage - DUAL INSIDE MECHANICAL SEALS WITH SILICON CARBIDE FACES:
Oil-lubricated dual mechanical seals with silicon carbide faces
provide exceptional resistance to wear, heat, and corrosion for
longer seal life - OIL LIFTER: Tsurumi’s exclusive Oil Lifter continuously lubricates
and cools the seal faces, extending seal life even at low oil levels. - OIL SEAL: Acts as a dust seal to protect the mechanical seals
from abrasive particles and contaminants - BACK PULL-OUT DESIGN: Allows the motor and impeller assembly
to be removed without disconnecting the pump casing, simplifying
maintenance and inspection. - AIR RELEASE VALVE: Automatically releases trapped air to prevent
air lock and maintain reliable pump operation.
Group Curves

MODELS
| Model | Motor Output (hp) | Discharge Size (inch) | Phase | Starting Method | Dimensions (inches) | Weight (lbs) | Cable Length (ft) | Need Thermal Relay in panel |
| 100BN41.5 | 2 | 4 | 3 | D.O.L | 23.9 x 11.6 x 24.9 | 141 | 32 | No |
| 100BN42.2 | 3 | 24.8 x 13.4 x 26 | 152 | No | ||||
| 100BN43.7 | 5 | 24.8 x 13.4 x 27.9 | 176 | No | ||||
| 100BN45.5 | 7.5 | 27 x 16.1 x 36.6 | 331 | No | ||||
| 100BN47.5 | 10 | 27 x 16.1 x 35.9 | 348 | No | ||||
| 100BN411 | 15 | 28.4 x 17.2 x 39.4 | 472 | Yes | ||||
| 100BN415 | 20 | 28.4 x 17.2 x 42.1 | 509 | Yes |
APPLICATIONS
-

Municipal
-

Industrial
-

Commercial

