KMBP Hemodialysis Peristaltic Pump
High-Flow Transfer for Shear-Sensitive Fluids
The Kamoer KMBP is a two-roller peristaltic pump designed for continuous transfer of blood, cell suspensions, culture media, and other shear-sensitive fluids. It combines a spring-loaded compression mechanism, brushless DC geared motor, transparent pump cover, and self-guiding tubing installation.
With a reference flow range of 6–850 mL/min, PWM or 0–7.5 V speed control, and a motor reference service life of at least 10,000 hours, the KMBP is suitable for blood dialysis systems, bioreactors, laboratory research equipment, and other OEM fluid-handling devices.
Key Features
Spring-Loaded Tubing Compression
The spring-loaded roller assembly automatically adapts to the tubing and maintains controlled compression during operation. This flexible pumping mechanism helps reduce unnecessary mechanical stress when transferring viable cells or other shear-sensitive fluids.
The design also provides pressure-overload limitation to help protect the tubing and pump mechanism under abnormal operating conditions.
Wide Flow Range
The KMBP provides a specified flow range of 6–850 mL/min.
Two PVC tubing sizes are supported:
Actual flow depends on motor speed, tubing condition, liquid properties, outlet pressure, and operating conditions.
Self-Guiding Tubing Installation
The tubing can be pre-positioned inside the pump head before the cover is closed. When the pump starts at low speed, the tubing automatically enters the correct operating track, simplifying installation and reducing setup time.
Brushless DC Geared Motor
The 24 V brushless DC motor is paired with a precision gearbox for continuous operation with controlled temperature rise. The motor has a reference service life of at least 10,000 hours under the manufacturer’s test conditions.
Adjustable Speed Control
The motor supports two speed-control methods:
The pump operates over a specified pump-head speed range of 4–75 rpm. Direction control and speed feedback are also available for automated equipment integration.
Speed Feedback
The motor provides a feedback signal of 36 pulses per motor revolution, allowing the host controller to monitor motor speed and operating status.
Transparent Pump Cover
The transparent PCTG pump cover allows operators to observe tubing position and pump operation without opening the pump head.
Position and Cover Detection
Hall sensors can support roller-position and pump-cover status detection, helping the equipment controller manage startup, tubing loading, and safety interlocks.
Sealed Panel Integration
The mounting structure is designed to support sealed panel installation where the final equipment requires enhanced enclosure protection. The actual IP rating must be verified at the complete-device level.
Manual Emergency Operation
In an emergency, the roller assembly can be rotated manually using the operating lever, allowing the tubing or fluid path to be repositioned when powered operation is unavailable.
Typical Applications
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Blood dialysis equipment
-
Bioreactor circulation and perfusion
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Cell-culture media transfer
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Shear-sensitive cell suspension transfer
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Laboratory research equipment
-
Biochemical analysis systems
-
OEM life-science fluid-handling equipment
Suitability for medical or life-science use must be evaluated and validated in the final device.
Technical Specifications
| Parameter |
Specification |
| Product model |
KMBP |
| Pump type |
Peristaltic pump |
| Motor type |
Brushless DC geared motor |
| Rated voltage |
24 V |
| Power |
75 W |
| Specified flow range |
6–850 mL/min |
| Flow repeatability |
±5% |
| Pump-head speed range |
4–75 rpm |
| Rotor configuration |
Two rollers |
| Control methods |
PWM or 0–7.5 V analog control |
| Speed feedback |
36 pulses per motor revolution |
| Rotation control |
Clockwise and counterclockwise |
| Weight |
Approx. 1,950 g |
| Motor reference service life |
≥10,000 hours |
| Reference noise level |
<55 dB |
| Tubing material |
PVC |
| Tubing wall thickness |
2 mm |
| Compatible tubing sizes |
6 × 10 mm and 8 × 12 mm |
The noise value was measured at a distance of 50 cm with an ambient noise level of 35 dB.
Reference Flow Performance
| Tubing Size |
Maximum Reference Flow |
| 6 × 10 mm |
520 mL/min per tubing path |
| 8 × 12 mm |
850 mL/min per tubing path |
The reference values were measured using pure water at 20°C, standard atmospheric pressure, and zero outlet pressure. Actual performance may vary with the liquid, tubing properties, outlet pressure, motor-speed tolerance, and duty cycle.
The manual’s reference pressure curve for 8 × 12 mm tubing indicates relatively stable flow up to approximately 1.5 bar before flow begins to decline. Pressure performance should be verified under actual operating conditions.
Main Structural Materials
| Component |
Material |
| Synchronous disc |
Engineering plastic |
| Rollers |
Stainless steel |
| Pump cover |
PCTG |
| Shaft |
Stainless steel |
| Pump base |
Aluminum alloy |
Control Interface
The brushless motor supports:
-
PWM frequency: 10–30 kHz
-
PWM amplitude: 7.5 V
-
PWM stop range: 0–12% duty cycle
-
PWM adjustment range: 13–100% duty cycle
-
Analog stop range: 0–0.9 V
-
Analog adjustment range: 1–7.5 V
-
Speed feedback output
-
Direction control
-
Reverse-polarity protection
Selection and Safety Notes
Before selecting the KMBP, confirm:
-
Liquid type and concentration
-
Whether the fluid contains viable cells or other shear-sensitive components
-
Target flow rate
-
Operating and maximum pressure
-
Tubing compatibility
-
Continuous or intermittent duty cycle
-
Control interface
-
Required enclosure protection
-
Cleaning or sterilization method
-
Expected service life
The operating environment should not exceed 60°C or 70% relative humidity, non-condensing. Real-liquid testing under actual operating conditions is recommended before final selection.
About Kamoer
Founded in 2005, Kamoer specializes in reliable micro-pump and precision fluid-handling solutions. We support equipment manufacturers with pump selection, tubing evaluation, control integration, customized configurations, and application testing.
Contact Kamoer with your fluid, target flow rate, operating pressure, duty cycle, tubing requirements, and control method to receive a suitable KMBP configuration.
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