Precision Indexing Table Bearings – Zero Backlash & High Rigidity Solutions
Product Overview
As a premier manufacturer specializing in ZZ Professional Slewing Bearings, we understand that the heart of any precision automation system lies in its indexing capability. Our Indexing Table Bearings (also known as Rotary Table Bearings or Precision Cross Roller Rings) are engineered to deliver exceptional rotational accuracy and stiffness.
Designed for applications requiring precise angular positioning, these bearings replace traditional multi-component assemblies, offering a compact, high-rigidity solution. Whether for a CNC indexing head or a robotic turntable, our bearings ensure smooth motion with zero backlash, maintaining micron-level repeatability even under heavy loads.
Performance & Quality Highlights
In the demanding world of precision machining and automation, standard bearings simply won't suffice. Our Indexing Table Bearings are manufactured with strict adherence to P4 and P2 precision classes.
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High Rigidity & Load Capacity: Utilizing a cross-roll or multi-row ball structure, our bearings can simultaneously withstand axial, radial, and moment loads. This "single bearing" capability significantly simplifies housing design.
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Zero Backlash (Preload): We apply precise internal preload to eliminate play between the rolling elements and raceways. This ensures that when your table stops, it stays exactly where it is supposed to be.
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Low Friction & High Speed: Optimized raceway geometry and high-quality lubrication allow for high-speed indexing with minimal heat generation.
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Integrated Sealing: Our ZZ (metal shield) and 2RS (rubber seal) variants protect the precision internals from coolant, dust, and debris, extending service life in harsh industrial environments.
Technical Specifications
We offer a wide range of standard sizes and custom configurations. Below are the typical specifications for our high-precision indexing series:
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Parameter
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Specification / Range
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Bearing Type
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Crossed Roller / 4-Point Contact Ball / Thrust-Radial
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Bore Diameter
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50mm – 1000mm (Custom sizes available)
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Precision Grade
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ISO P4, P2, ABEC 7, ABEC 9
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Material
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GCr15 (AISI 52100), 42CrMo, or Stainless Steel (440C)
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Cage Material
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Brass (H62), Nylon (PA66), or Full Complement
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Sealing Type
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ZZ (Non-contact Metal), 2RS (Contact Rubber)
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Radial Clearance
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C0 (Standard), C3, or Preload (Negative Clearance)
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Torque Capacity
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High Moment Load Resistance
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Certifications & Standards
Quality is not just a promise; it is a documented fact. Our manufacturing processes are audited and certified to meet global standards:
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ISO 9001:2015: Certified Quality Management System.
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ISO 492: Dimensional and geometrical tolerances for rolling bearings.
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DIN 628 / JIS B 1514: Compliance with German and Japanese industrial standards for precision.
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RoHS Compliant: All materials used are environmentally friendly and compliant with EU directives.
Our Services
At ZZ Professional, we don't just sell bearings; we provide engineering solutions.
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OEM & ODM Support: We can machine gears (internal or external) directly onto the bearing rings to integrate with your motor drive systems.
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Technical Consultation: Our engineers assist in calculating equivalent loads and selecting the correct preload for your specific indexing application.
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Fast Prototyping: With advanced CNC grinding and turning centers, we can produce samples for validation within 15 days.
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Global Logistics: Secure, moisture-proof packaging and reliable shipping to ensure your bearings arrive in perfect condition.
Applications
Our Indexing Table Bearings are the core component in various high-tech sectors:
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CNC Machinery: Rotary tables, indexing heads, and 4th/5th-axis drives.
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Industrial Robotics: Robot joints (J1, J2, J3 axes) requiring compact, high-torque transmission.
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Medical Equipment: CT scanner rotation tables and radiotherapy positioning systems.
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Semiconductor: Wafer handling robots and precision alignment stages.
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Aerospace: Radar antenna positioning and satellite solar array drives.
Frequently Asked Questions (FAQ)
Q1: What is the difference between a standard slewing ring and an indexing table bearing?
A: While both handle combined loads, an indexing table bearing is manufactured to much higher precision grades (P4/P2) with controlled preload to ensure zero backlash, which is critical for positioning accuracy. Standard slewing rings are typically for slower, heavy-load structural rotation (like cranes).
Q2: Can you supply bearings with gears?
A: Yes. We specialize in machining external and internal gears directly onto the bearing rings. Please provide your gear module and tooth count requirements.
Q3: What lubrication do you use for high-speed indexing?
A: For high-speed applications, we typically use low-viscosity synthetic grease or oil lubrication systems to minimize friction heat. For standard speeds, high-grade lithium-based grease is used.
Q4: How do you ensure the bearing arrives without rust?
A: We use a multi-step anti-corrosion process. Bearings are coated with anti-rust oil, wrapped in VCI (Volatile Corrosion Inhibitor) paper, and sealed in moisture-proof plastic bags before being packed in sturdy wooden or cardboard boxes.
Q5: Do you offer "split" type bearings for easier installation?
A: Yes, for large diameter indexing tables, we can manufacture split outer ring designs to facilitate mounting without damaging the precision raceways.
Contact ZZ Professional today to optimize your rotary motion systems with our precision indexing bearings.
