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Advanced Crankshaft, Connecting Rod & Piston Assembly: Precision-engineered crankshaft with counterweights for optimal dynamic balance and low vibration. High-strength connecting rod and piston setup lowers clearance volume, improves gas compression efficiency, and prolongs component operational life.
High-Reliability Sliding Bearings: Engineered to withstand heavy-duty thermal loads with high-precision hydrodynamic sliding bearings and thrust washers. Minimizes radial and axial frictional wear, prevents scoring, and delivers exceptional operational stability with estimated bearing design life of 50,000 to 80,000 hours.
High-Efficiency Motor Design: Custom electrical stator and rotor structure supporting Part-Winding (PW) or Direct-On-Line (DOL) starting configurations. Continuously cooled by low-temperature suction gas flowing through internal motor passages, lowering thermal stress, reducing startup power surges, and maintaining high operating efficiency across multi-refrigerant applications.
Application Areas
Commercial Supermarket Display & Cold Rooms: Ideal as a reliable semi hermetic compressor for medium-to-high temperature cold storage, walk-in coolers, and display cases.
Commercial HVAC & Liquid Chillers: Provides stable, energy-efficient chilling for air conditioning plants, water chillers, and process cooling loops.
Agricultural Precooling & Processing: Delivers high cooling capacity for post-harvest precooling facilities and food processing plants.
Product Image
Technical Specification
Model
SP4HF1000, SP4HF100E
Rated power
10HP/7.5KW
Exhaust volume (50Hz/60Hz)
35/42 m³/hr
Refrigerant Type
R22, R407C, R134a, R404A, R507
Weight
143KG
Oil Charge
2.6L
Energy regulation
100, 50%
Standard motor
400V/3/50Hz, 460V/3/60Hz PW
Oil lubrication method
Pressure lubrication
Company Introduction
Coolstart brings over two decades of engineering expertise and global export capability to the B2B refrigeration and HVAC marketplace. We deliver comprehensive cooling solutions—from scroll, semi-hermetic, and screw compressors to customized unit coolers and commercial cold storage systems. Our commitment to strict factory quality controls, competitive direct-from-factory pricing, and reliable lead times makes us a trusted supply chain partner for HVAC OEMs, mechanical contractors, and engineering firms worldwide.
Frequently Asked Questions
Q1: How does the SP4HF1000 handle sudden electrical voltage fluctuations in industrial facilities?
A: The motor supports Part-Winding (PW) starting to reduce inrush current, while an integrated INT6982 electronic module monitors motor temperatures to prevent electrical damage.
Q2: How does the compressor maintain efficient oil lubrication during prolonged low-load operation?
A: The internal splash lubrication system, paired with balanced crank throw oil channels, delivers a continuous oil film to all sliding bearings and wrist pins even when stepped down to 50% capacity.
Q3: Is the suction filter difficult to service during routine system maintenance?
A: No, the high-density suction strainer is mounted near the end cover, allowing maintenance technicians to inspect and clean the filter without disconnecting main refrigerant lines.
Q4: What is your standard lead time for global commercial shipments?
A: In-stock sample units ship within 3 business days, while volume commercial manufacturing orders are fulfilled within 10 to 15 working days.
Q5: Can Coolstart provide customized motor voltages and OEM nameplates?
A: Yes, Coolstart provides complete OEM/ODM solutions, including customized multi-language metal nameplates, tailored motor voltage configurations, and private labeling.
Connect with Our Engineering Team
Upgrading your commercial refrigeration systems or sourcing reliable semi-hermetic reciprocating compressors for an upcoming project? Contact the Coolstart technical department today for selection support, dimensional drawings, and factory-direct B2B pricing.
To receive a detailed quotation within 8 hours, please include your required Model, Quantity, Refrigerant, Voltage/Frequency, and Operating Conditions in your request.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2001
Total Annual:
50000000-10000000
Employee Number:
30~100
Ecer Certification：
Verified Supplier
Shenzhen Coolstart Refrigeration Equipment Co., Ltd. is a modern, professional refrigeration manufacturer with over 20 years of industry experience. We focus on the professional production and global sales of high-performance refrigeration equipment, serving as a reliable and cost-effective suppli...
Shenzhen Coolstart Refrigeration Equipment Co., Ltd. is a modern, professional refrigeration manufacturer with over 20 years of industry experience. We focus on the professional production and global sales of high-performance refrigeration equipment, serving as a reliable and cost-effective suppli...
