GQZ BVN-7151A Integrated Radial-Thrust Combined Bearing 80×140×50mm For Large Screw Air Compressor Rotor Assembly

BVN-7151 / BVN-7151A is a dedicated two-piece combined bearing exclusively matched for large Atlas screw air compressor main rotor. It integrates BC1-0888A separable cylindrical roller bearing (undertake heavy radial load) and BA1-7237A 40° angular contact ball bearing (bear bidirectional axial thrust) as one matched set. Stable continuous operation under long-hour high-speed, high-temperature airend working conditions.

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Model: BVN-7151 (standard) / BVN-7151A (precision upgraded version)

Boundary dimension: d80mm × D140mm × B50mm

Precision tolerance: 79.9×140.2×52mm actual fitting size

Single set weight: 3.5kg

Internal matching parts:

• Radial unit: BC1-0888A cylindrical roller bearing
• Thrust unit: BA1-7237A 40° angular contact ball bearing
• Cage: High temperature resistant polyamide nylon cage
• Material: GCr15 chrome bearing steel
• Precision grades: P6 / P5 / P4
• Structure: Open type, pre-matched combined set
• Full load data and CAD drawings available on request

1. Dual-bearing integrated design, separate bearing radial and axial force evenly, avoid single bearing overload failure
2. Large contact angle angular contact unit withstands strong axial thrust generated by high-speed screw rotor
3. Nylon cage low friction & heat-resistant, no deformation under long-time high-temperature continuous rotation
4. Super-finished raceway reduces vibration, noise and abrasion, extend compressor overhaul cycle
5. Pre-matched clearance set, one-piece installation, simplify airend assembly & disassembly during maintenance
6. Fully interchangeable with original SKF Austria BVN-7151A for large Atlas compressor aftermarket replacement
7. Custom high-temperature EP grease, OEM laser marking and multiple precision grades supported
8. 👉 Lower air compressor breakdown frequency and cut overhaul labor & spare parts cost

• Large industrial Atlas screw air compressor main rotor front/rear support airend
• High-power permanent magnet screw compression equipment main shaft
• Heavy-duty rotary equipment with huge combined radial-axial loads
• Mining, metallurgy large supporting air compressor dedicated replacement bearing

25+ years specialized manufacturer of air compressor exclusive combined bearings

Exported to over 50 countries worldwide

Strict high-speed temperature rise, vibration and dimensional matching inspection before delivery

24-hour professional technical support for large compressor model matching

Stable bulk stock supply for air compressor repair distributors

👉 We focus on quality, reliability, and long-term partnership

GCr15 raw material metallurgy & hardness inspection

Precision superfinishing grinding for cylindrical & angular contact raceways

Complete quenching & tempering heat stabilization treatment

High-speed continuous temperature rise aging test for whole combined unit

Full dimensional tolerance & clearance matching inspection for compressor special bearings

Looking for heavy load BVN-7151A integrated combined air compressor bearings?

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Fast quotation within 24 hours

Large compressor model matching suggestion

Custom high-temperature lubricant & precision options

Competitive factory price

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