Precision Manufactured Double Row Angular Contact Ball Bearings305283da 305286D 305183 305608b

• Customization: Available
• Contact Angle: 15°
• Aligning: Aligning Bearing
• Model NO.: 305283DA 305286D 305183 305608B
• Separated: Unseparated
• Rows Number: Multiple
• Load Direction: Radial Bearing
• Material: Bearing Steel
• Transport Package: Custom Packaging
• Specification: 95mmX145mmX240mm
• Trademark: Ju dong
• Origin: China
• HS Code: 84822000
• Production Capacity: 50000
• Package Size: 800.00cm * 800.00cm * 1000.00cm
• Package Gross Weight: 1.000kg

Product Description

 

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Product Description

 Basic Structure & Design

Components:

• Double-row steel balls: Two rows of balls arranged symmetrically at contact angles (typically 15°-40°).

• Inner & outer rings: Angular contact raceways optimized for load distribution.

• Integrated cage: Made of nylon or brass to synchronize double-row ball movement.

Design Features:

• Bidirectional axial load capacity: Handles axial loads in both directions alongside radial loads.

• High rigidity: Symmetric layout minimizes deformation, ideal for precision positioning.

• Compact design: Dual-row integration saves installation space.

Core Advantages

• Superior load capacity:

  • Axial load: 50%-80% higher than single-row bearings.

  • Combined loads: Simultaneously handles radial and axial loads (e.g., gearboxes, spindles).

• High precision & rigidity:

  • Reduces vibration and misalignment in precision equipment (e.g., CNC spindles, robotic joints).

• Simplified installation:

  • Single-unit design eliminates pairing requirements (unlike single-row angular contact bearings).

• Extended service life:

  • Optimized stress distribution minimizes localized wear.

Key Selection Parameters

• Contact angle:

  • 15°: Prioritizes high speed, low axial loads (e.g., small motors).

  • 25°-40°: Prioritizes heavy axial loads (e.g., industrial machinery).

• Dynamic/static load ratings:

  • Calculate based on operational conditions (refer to ISO 281 standards).

• Speed limits:

  • Slightly lower than single-row bearings (20%-30% reduction due to friction).

Material & Sealing Options

• Materials:

  • Chrome steel (GCr15): General-purpose for standard industrial environments.

  • Stainless steel (440C/316L): Corrosion-resistant for food/chemical industries.

  • Ceramic hybrid: High-speed, anti-electrolysis (e.g., semiconductor equipment).

• Sealing types:

  • Contact seals (2RS): Dust/waterproof, slightly reduces speed capability.

  • Non-contact seals (ZZ): Low friction, ideal for high-speed applications.

Installation Instructions

 

 Installation & Maintenance Guidelines

• Installation:

  • Use thermal or hydraulic tools to avoid deformation.

  • Ensure proper shaft/housing tolerances (recommended H7/k6 fit).

• Preload adjustment:

  • Eliminate clearance via shims or threaded preload (follow manufacturer guidelines).

• Lubrication:

  • High-speed: Synthetic oils (e.g., PAO).

  • High-temperature/heavy loads: High-temperature grease (NLGI Grade 2).

 

Product Parameters

Designation	Principal dimensions			Basic load ratings		Speed ratings
				dynamic	static	Reference speed	Limiting speed
	d[mm]	D[mm]	B[mm]	C[kN]	C0[kN]	[r/min]	[r/min]
305283 DA	150	230	70	203	285	2 800	3 000
305286 D	150	225	73	182	265	1 700	2 000
305183	160	240	76	234	335	2 600	2 800
305608	160	215	56	135	220	2 800	3 000
305608 B	160	215	56	135	220	2 800	3 000
305180	170	260	84	281	405	2 400	2 600
305262 D	180	259.5	66	225	310	2 400	2 600
305288 DA	180	250	70	190	285	2 400	2 600
305338 D	190	269.5	66	270	415	2 200	2 400
305263 D	200	289.5	76	302	475	1 800	2 200
305263 DA	200	289.5	76	302	475	1 800	2 200
305428 D	200	279.5	76	242	380	1 900	2 400
305272 D	220	309.5	76	312	520	2 000	2 000
305272 DA	220	309.5	76	312	520	2 000	2 000
305264 D	230	329.5	80	351	600	1 900	2 000
305270 D	260	369.5	92	397	710	1 700	1 700
305269 D	280	389.5	92	403	750	1 600	1 600

Certifications

Packaging & Shipping

 

Company Profile

FAQ

Q1: What about the MOQ? Can you accept a sample order?
A: Our company MOQ is 1pc, and we can accept sample orders.

Q2: Can you accept OEM/ODM?
A: Yes, we can.Customizing according to your requirements or drawing.

Q3: Do you supply door-to-door service?
A: By air or express(DHL, FEDEX, EMS, etc.)

Q4: Could you tell me the materials of your bearings?
A: Chrome steel, carbon steel, stainless steel, ceramic, and plastic material.

Q5: Are you a factory or trading company?
A: We have our factory, JUDONG Bearing is specializes in manufacturing and exporting bearings.