BMT Bearing manufactures and supplies high-performance 30BG05S5G Air Conditioner Bearings for automotive air conditioning compressor systems. Designed for high-speed rotation, low noise operation, and long service life, this bearing helps ensure stable compressor performance under demanding operating conditions. Produced under ISO 9001 and IATF 16949 certified quality management systems, each bearing undergoes strict inspection and testing to meet OEM-level quality requirements. With more than 20 years of manufacturing experience, BMT Bearing provides reliable supply solutions for compressor manufacturers, aftermarket distributors, and industrial customers worldwide.
Automotive air conditioning compressor bearings operate continuously under high-speed rotation, elevated temperatures, and fluctuating loads. The 30BG05S5G Air Conditioner Bearing is specifically engineered to provide stable performance in these demanding environments.
At BMT Bearing, our engineering team continuously improves bearing design, machining precision, lubrication systems, sealing performance, and noise control based on real-world feedback from compressor manufacturers, automotive repair facilities, distributors, and OEM customers.
Through strict production management and quality verification procedures, we ensure every bearing delivers consistent performance and long-term durability in actual operating conditions.
Technical Parameters
For precise selection, we provide detailed specifications for this series. The following table lists 10 continuous deep groove ball bearing:
Part number
Reference code
d (mm)
D (mm)
B/C (mm)
83A693
30BGO4S8G/30BD04S8G-2DS
30
47
18
30BGO5SS5
30BD4012DUCG21/30BD40DF
30
55
23
32BGO4S3G
32BG4718BU
32
47
18
35BGO5S6G
35BGO5S6G
35
52
23
38BGO5S2DG
38BGO5S6G
38
54
17
40BGS40G
40BDS524
40
55
24
40BGO5S1G
40BGO5S1DS
40
57
20/24
40B0219V
40BD45/DF08B28L8/40BGO5S2G
40
57
24
40B249V
40BGS8G-2DS/907257
40
62
20.6
40BGS11DS
40BGS11G-2DS
40
62
24
Product Features & Engineering Advantages
High-Speed Rotational Stability
Precision-ground raceways and optimized internal geometry allow smooth rotation during continuous compressor operation, reducing friction and maintaining stable performance.
Low Noise and Reduced Vibration
Manufactured according to EMQ-grade standards, the bearing minimizes vibration and operating noise, contributing to improved comfort and compressor efficiency.
Enhanced Durability
Produced from premium GCr15 bearing steel and subjected to controlled heat treatment processes, the bearing offers excellent wear resistance and fatigue strength.
Optimized Sealing Protection
The double-sealed design helps prevent dust, moisture, and lubricant contamination, extending service life under harsh operating environments.
High-Temperature Reliability
Specially selected grease and optimized internal clearance help maintain stable operation during prolonged exposure to high ambient temperatures.
Manufacturing Process
The 30BG05S5G Air Conditioner Bearing is manufactured through a controlled production process that includes:
Raw material inspection
CNC machining
Raceway grinding
Heat treatment
Superfinishing
Precision assembly
Grease filling
Seal installation
Noise testing
Final inspection
Packaging and shipment
Each production batch is fully traceable through our quality management system.
Quality Assurance
Quality control is implemented throughout the entire manufacturing process.
Every 30BG05S5G Air Conditioner Bearing undergoes:
Raw material verification
Hardness testing
Dimensional accuracy inspection
Noise and vibration analysis
Rotational smoothness testing
Lubrication consistency verification
Surface finish inspection
Final visual examination
Only products meeting established quality standards are approved for shipment.
Real Manufacturing Experience
Since 2004, BMT Bearing has accumulated extensive manufacturing experience in automotive compressor bearings and precision ball bearings.
Our production facilities in Ningbo and Yuyao serve customers across Southeast Asia, South America, the Middle East, Europe, and other international markets.
Based on customer application feedback from high-temperature regions and demanding operating environments, we continuously optimize:
Internal clearance control
Grease performance stability
Sealing effectiveness
Noise reduction performance
Bearing service life
These improvements are derived from actual manufacturing and application experience rather than theoretical product design.
Typical Applications
The 30BG05S5G Air Conditioner Bearing is widely used in:
Automotive air conditioning compressors
Passenger vehicle A/C systems
Commercial vehicle air conditioning systems
Compressor rebuilding and repair programs
Automotive aftermarket replacement markets
OEM compressor manufacturing projects
Its stable performance makes it suitable for both original equipment production and aftermarket service applications.
Manufacturing Capability
BMT Bearing operates modern production facilities equipped with:
Automated grinding production lines
Precision assembly systems
Noise and vibration testing equipment
Hardness testing instruments
Dimensional inspection systems
Batch traceability management systems
With annual production capacity exceeding 100 million bearing units, we support large-volume OEM programs and long-term supply agreements worldwide.
Proven Manufacturing Strength
More than 20 years of bearing manufacturing experience
Annual production capacity exceeding 100 million units
ISO 9001 certified production management
IATF 16949 certified automotive quality system
Global export experience across multiple regions
OEM and aftermarket supply capability
Stable batch-to-batch consistency
Responsive technical and export support
Why Customers Choose BMT Bearing
In-House Manufacturing Control
Key production processes including grinding, heat treatment, assembly, and inspection are managed internally to ensure consistent product quality.
Reliable Product Consistency
Automated production equipment and standardized operating procedures help maintain stable performance across every batch.
Transparent Production Management
Customers are welcome to evaluate our production workshops, inspection procedures, packaging operations, and export processes before establishing long-term cooperation.
Flexible OEM Services
We support customized manufacturing solutions including:
OEM production
Customized laser marking
Private label branding
Customized packaging
Bulk export programs
Long-Term Partnership Approach
We focus on stable quality, reliable delivery schedules, and responsive customer support rather than short-term transactions.
Frequently Asked Questions
What is the function of a 30BG05S5G Air Conditioner Bearing?
It supports smooth rotation of the automotive air conditioning compressor and helps reduce friction, vibration, and noise during operation.
What material is used in this bearing?
The bearing is manufactured from high-quality GCr15 bearing steel and heat-treated to improve wear resistance and fatigue strength.
Is this bearing suitable for high-temperature environments?
Yes. The bearing uses high-temperature grease and optimized sealing structures designed for demanding automotive operating conditions.
Can BMT Bearing provide OEM services?
Yes. We support OEM production, customized marking, private label packaging, and bulk manufacturing projects.
What quality standards does BMT Bearing follow?
Production is conducted under ISO 9001 and IATF 16949 certified quality management systems to ensure consistent product performance and reliability.
Is this bearing suitable for aftermarket replacement?
Yes. The 30BG05S5G Air Conditioner Bearing is widely used in compressor repair, rebuilding, and aftermarket replacement programs worldwide.
Work With BMT Bearing
At BMT Bearing, we follow the principle of Quality First, Credit First, and Service First. By combining advanced manufacturing equipment, strict quality control procedures, and more than two decades of production experience, we provide dependable 30BG05S5G Air Conditioner Bearing solutions for global customers.
Whether you are an automotive parts distributor, compressor manufacturer, rebuilding facility, or industrial wholesaler, our team is ready to support your business with stable quality products, flexible OEM services, and reliable international supply capabilities.
Submit specifications for Industrial Bearings, Deep Groove Ball Bearings, Taper Roller Bearings, and more. BMT’s team responds within 24 hours with competitive pricing for durable bearings.
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