Product Description
High-Pressure Optimized Casing Design
Built with a high-strength body rated for working pressures up to 28 bar, this semi-hermetic type compressor features streamlined internal suction channels that minimize pressure loss and flow resistance. The compact body integrates shut-off valves, suction filter, and temperature sensors into a single rigid structure, saving installation space inside refrigeration equipment.
Precision Floating Bearing System
Engineered with advanced floating sleeve bearings and thrust washer combinations, this semi-hermetic type compressor prevents traditional axial and radial wear. The high-precision, low-noise journal bearings deliver optimal lubrication performance, extending the calculated mechanical service life to 50,000-80,000 operating hours.
360° Rotatable Shut-Off Valves
To simplify piping connections in tight mechanical rooms, both the high-pressure discharge and suction shut-off valves feature 360° full-angle rotation. This design allows flexible piping entry angles from any direction, reducing stress on connecting copper pipes and speeding up field installation.
Suction Gas-Cooled Multi-Refrigerant Motor
The integrated motor utilizes incoming cold suction gas flowing directly through internal housing channels for continuous thermal protection. Supporting Part-Winding (PW) startup to keep electrical inrush current low, the customized motor design ensures stable performance across multiple refrigerants, including R22, R407C, R134a, R404A, and R507.
Company Introduction
Coolstart is a modern, large-scale refrigeration enterprise with over 20 years of industry experience. We specialize in supplying semi-hermetic compressors, scroll compressors, screw compressors, reciprocating compressors, rotary compressors, cold storage equipment, quick-freezing systems, and ice-making machinery. Supporting full-category OEM and ODM customization, Coolstart delivers reliable refrigeration products to clients across the United States, Russia, the United Kingdom, the United Arab Emirates, Saudi Arabia, and other global markets through technical innovation and dedicated service.
Frequently Asked Questions
Q1: What are the primary advantages of floating sleeve bearings over standard solid bushings?
A1: Floating sleeve bearings dynamically distribute lubricating oil film pressure, effectively eliminating localized shaft seizure and significantly dampening operational mechanical vibration.
Q2: Can the SP4LN0800 compressor operate with eco-friendly HFC refrigerants like R404A and R507?
A2: Yes, the internal motor insulation materials and synthetic ester oil charge are fully compatible with R404A, R507, R134a, R407C, and traditional R22 refrigerants.
Q3: How does the 360° rotatable shut-off valve design simplify system retrofits?
A3: Service engineers can re-orient the valve flange connection without altering existing copper line routing, eliminating the need for custom pipe elbows during field replacements.
Q4: What protective measures prevent internal rusting during long-distance ocean shipping?
A4: Each unit is vacuum-dried, factory oil-filled, and pressurized with dry nitrogen gas holding charges inside sealed, heavy-duty wooden export crates.
Q5: Are custom operating voltages available for non-standard regional power grids?
A5: Yes, in addition to standard 400V/50Hz and 460V/60Hz motors, custom motor windings for special industrial voltages can be manufactured upon request.
Request a Technical Quotation
Our engineering support team delivers precise model selection, system matching, and commercial quotations within 8 hours. Send your project requirements to start technical evaluation today.
Please include the following details in your inquiry:
- Target Model & Quantity
- Preferred Refrigerant Type
- System Power Supply
- Target Operating Conditions
- Specific System Requirements
