7205ADB Back-to-Back Angular Contact Ball Bearing 25×52×30mm 25° Contact Angle Bearing For Gearbox Machine Tool Pump Machinery GQZ

• 7205ADB is a factory pre-matched duplex angular contact ball bearing set combined by two 7205A single row bearings in back-to-back DB layout, with standard overall dimensions 25*52*30mm and 25° contact angle. Unlike single angular contact bearings that only support one-way axial load, this DB paired structure expands the load center distance, greatly improving overall rigidity and anti-overturning performance, capable of bearing stable radial load and bidirectional axial load simultaneously. The open structure design supports external continuous oil lubrication to meet high-speed and heavy-duty working demands, while precisely ground raceways and brass cage ensure low vibration and quiet stable rotation. Each set is strictly inspected for matching clearance and preload consistency, ready for direct installation without secondary pairing, widely adopted in precision transmission equipment requiring high rotary accuracy and bidirectional load capacity.

*Send inquiry to get full technical datasheet and factory price of 7205ADB bearing.

• 25° contact angle, balanced radial and bidirectional axial bearing capacity
• DB back-to-back matched duplex set, ultra-high structural rigidity and anti-tilting performance
• Open type design, compatible with circulating oil lubrication for high-speed working conditions
• Precision brass cage, low friction and stable high-speed operation
• Standard clearance as default, C3 enlarged clearance optional for high-temperature environments
• P0 precision standard, P6 high precision grade available on customer request

• Precision CNC machine tool spindles and machining center rotary components
• Industrial gearboxes, speed reducers and heavy-duty transmission equipment
• Hydraulic pumps, oil compressors and fluid power machinery
• Truck and automotive transmission spare parts
• Large agricultural machinery rotary devices
• Automated production line precision rotating mechanisms

• Manufactured with high-purity GCr15 chrome bearing steel and standardized heat treatment for superior hardness and wear resistance.
• Superfinished inner/outer raceways and steel balls deliver smooth, low-noise long-life running performance.
• Strict duplex pairing inspection to guarantee uniform preload, consistent rigidity and stable dimensional tolerance.
• Large ready stock for 7205ADB matched bearing sets, support small sample orders and fast global bulk delivery.
• Provide OEM laser marking, customized packaging and technical installation guidance for wholesale buyers.

*Contact our technical team to select proper contact angle and duplex arrangement for your equipment.

*Stable stock for single row angular contact bearings, support fast bulk order shipment.