ZKLDF High-Speed Rotary Table Bearings

ZKLDF Rotary Table Bearings Structure Diagram  

ZKLDF Rotary Table Bearings | High-Speed Precision Turntable Bearings | LYDL

 

	Contour dimension										Fixing Hole
Bearing	d	D	H	H1	D1	D2	D3	J	J1	a	Inner Ring			Outer Ring
Code											d1	d2	Quantity4)	d3	Quantity4)
					m	m					m	m		mm
ZKLDF100	100	185	38	25	160	136	158	112	170	5.4	5.6	10	16	5.6	15
ZKLDF120	120	210	40	26	184	159	181	135	195	6.2	7	11	22	7	21
ZKLDF150	150	240	40	26	214	188	211	165	225	6.2	7	11	34	7	33
ZKLDF200	200	300	45	30	274	243	271	215	285	6.2	7	11	46	7	45
ZKLDF260	260	385	55	36.5	345	313	348	280	365	8.2	9.3	15	34	9.3	33
ZKLDF325	325	450	60	40	415	380	413	342	430	8.2	9.3	15	34	9.3	33
ZKLDF395	395	525	65	42.5	486	450	488	415	505	8.2	9.3	15	46	9.3	45
ZKLDF460	460	600	70	46	560	520	563	482	580	8.2	9.3	15	46	9.3	45
ZKLDF580	580	750	90	60	702	656	700	610	720	11	11.4	18	45	11.4	42

				Screw
	Number of connecting	Thread back	Pitch	tightening	Axial Direction		Limit Speed5)	Friction
Bearing Code		hole	Pitch1)	moment	Move	Be Still		moment of bearing			Weight
	screws			MA2)	Ca	Coa	Grease Lubrication
		G	Quantity	QuantityXt		Nm	kN		r/min	Nm	Kg
ZKLDF100	2	M5	3	18×	20°	8.5	67	251	2800	1.6	4.5
ZKLDF120	2	M8	3	24×	15°	14	72	315	2400	2	6
ZKLDF150	2	M8	3	36×	10°	14	76	365	2000	3	7.5
ZKLDF200	2	M8	3	48×	7.5°	14	112	550	1600	4.5	11
ZKLDF260	2	M12	3	36×	10°	34	155	920	1200	7.5	22
ZKLDF325	2	M12	3	36×	10°	34	165	1110	1000	11	28
ZKLDF395	2	M12	3	48×	7.5°	34	214	1470	800	16	39
ZKLDF460	2	M12	3	48×	7.5°	34	255	1860	700	21	50
ZKLDF580	3	M12	6	48×	7.5°	68	282	2150	500	40	82
ZKLDF650	3	M12	6	48×	7.5°	68	282	2150	500	40	82

Product Overview

ZKLDF Rotary Table Bearings are high-precision axial-radial bearings designed for applications requiring high rotational speed, low friction torque, and excellent positioning accuracy. Unlike conventional roller-type rotary table bearings, ZKLDF bearings utilize a double-direction axial angular contact ball bearing structure combined with radial guidance, providing smooth rotation and excellent dynamic performance. The optimized internal design enables higher rotational speeds and lower operating temperatures compared with many roller-based rotary table bearings. ZKLDF bearings are widely used in CNC machine tools, direct-drive rotary tables, measuring systems, semiconductor equipment, optical inspection systems, and precision automation machinery.

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Structural Features

Double-Direction Axial Angular Contact Ball Structure

The core feature of the ZKLDF series is the use of precision angular contact balls arranged in both axial directions. Advantages include:

• Lower friction torque
• Higher rotational speed
• Reduced heat generation
• Smooth rotational movement

Integrated Radial Guidance System

A dedicated radial bearing structure supports radial loads while maintaining rotational stability.

Optimized Preload Design

Factory-adjusted preload improves:

• Positioning accuracy
• Rotational stiffness
• Running stability

High-Speed Operation Capability

Compared with roller-based rotary table bearings, ZKLDF bearings are optimized for higher rotational speeds.

Compact Integrated Design

The bearing integrates axial and radial load support into a compact assembly.

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Why Choose ZKLDF Bearings?

ZKLDF bearings are ideal when applications require:

• High rotational speed
• Low friction torque
• Smooth motion control
• High positioning accuracy
• Direct-drive integration

These requirements are common in modern machine tools and automation systems.

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Difference Between ZKLDF and YRT Series

ZKLDF vs YRT

YRT Structure:

• Two axial roller assemblies
• One radial roller assembly

Characteristics:

• Higher rigidity
• Higher load capacity
• Better resistance to heavy machining forces

Best For:

• Heavy-duty rotary tables
• Machining centers
• Large cutting forces

ZKLDF Structure:

• Angular contact ball arrangement
• Radial guidance structure

Characteristics:

• Higher speed
• Lower friction
• Lower heat generation

Best For:

• High-speed rotary tables
• Measuring systems
• Direct-drive applications

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ZKLDF vs YRTS

YRTS is an improved high-speed version of YRT. However, YRTS still utilizes roller structures. Advantages of YRTS:

• Higher rigidity than ZKLDF
• Better heavy-load capability

Advantages of ZKLDF:

• Higher rotational speed
• Lower running torque
• Better thermal performance

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ZKLDF vs YRTM

YRTM integrates a measuring system for closed-loop control. Advantages of YRTM:

• Integrated encoder system
• High positioning accuracy
• Real-time angle feedback

Advantages of ZKLDF:

• Higher speed capability
• Lower friction torque
• Better dynamic response

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Typical Selection Guide

Choose YRT when:

• Cutting forces are high
• Rigidity is the priority
• Rotary table accuracy must remain stable under heavy load

Choose YRTS when:

• Both rigidity and speed are required
• Direct-drive machine tools are used

Choose YRTM when:

• Closed-loop positioning control is required
• Encoder integration is important

Choose ZKLDF when:

• High rotational speed is required
• Low friction torque is important
• Thermal stability is critical
• Precision measuring systems are involved

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Technical Specifications

Product Type: High-Speed Rotary Table Bearing Series: ZKLDF Structure: Double-Direction Axial Angular Contact Ball Bearing Rolling Element: Precision Balls Material:

• GCr15
• GCr15SiMn
• 100Cr6

Accuracy Grade:

• P5
• P4
• P2

Operating Temperature: -20°C to +120°C Lubrication: Grease Lubricated OEM Service: Available Customized Design: Available

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Typical Models

ZKLDF100 ZKLDF120 ZKLDF150 ZKLDF200 ZKLDF260 ZKLDF325 ZKLDF395 ZKLDF460 ZKLDF580 ZKLDF650 ZKLDF850 Custom dimensions are available upon request.

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Typical Applications

• CNC Rotary Tables
• Direct-Drive Rotary Tables
• Precision Measuring Equipment
• Semiconductor Equipment
• Optical Inspection Systems
• Aerospace Positioning Platforms
• Radar Systems
• Automation Machinery
• Precision Indexing Tables
• Motion Control Systems

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Key Advantages

• High rotational speed
• Low friction torque
• Excellent positioning accuracy
• Reduced heat generation
• Smooth rotational movement
• Compact structure
• Long service life
• Excellent dynamic performance

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Quality Assurance

Certifications

• ISO 9001 Quality Management System
• Material Traceability Reports
• Hardness Inspection Reports
• Accuracy Inspection Reports
• Final Inspection Records

 

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Manufacturing Process

1. Raw Material Inspection
2. Precision Turning
3. Heat Treatment
4. Raceway Grinding
5. Ball Raceway Superfinishing
6. Precision Measurement
7. Deep Cleaning
8. Precision Assembly
9. Preload Verification
10. Torque Testing
11. Final Inspection
12. Laser Marking
13. Rust Prevention
14. Vacuum Packaging
15. Export Packing
16. Shipment

 

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Packaging & Shipping

Standard Packaging

• Anti-rust Oil Protection
• Vacuum Packaging
• Shockproof Foam Protection
• Individual Carton Box
• Export Plywood Case

Shipping Options

• DHL
• FedEx
• UPS
• Air Freight
• Sea Freight
• DDP Available

 

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Installation & Maintenance

Installation Recommendations

• Ensure mounting surfaces are clean and flat.
• Follow preload requirements.
• Avoid excessive assembly force.
• Verify rotational torque after installation.

Maintenance Guidelines

• Monitor lubrication condition.
• Prevent contamination.
• Check operating temperature.
• Inspect rotational smoothness periodically.

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Frequently Asked Questions

What is the biggest advantage of ZKLDF bearings?

The combination of high rotational speed, low friction torque, and excellent positioning accuracy.

How do ZKLDF bearings differ from YRT bearings?

YRT uses roller structures for maximum rigidity, while ZKLDF uses angular contact balls for higher speed and smoother operation.

Are ZKLDF bearings suitable for direct-drive systems?

Yes. They are widely used in torque motor driven rotary tables and direct-drive positioning systems.

Why are ZKLDF bearings preferred in measuring equipment?

Their low friction torque and smooth rotational characteristics improve measurement accuracy.

Which series is better for heavy cutting operations?

YRT and YRTS are generally preferred because of their higher rigidity and load capacity.

Which series is better for high-speed operation?

ZKLDF bearings are typically the preferred choice for high-speed rotary systems.

What industries benefit most from ZKLDF bearings?

Machine tools, semiconductor manufacturing, optical inspection systems, aerospace positioning equipment, and precision measuring systems.

What precision grades are available?

P5, P4, and P2 precision grades are available.

Can LYDL provide customized ZKLDF bearings?

Yes. LYDL offers customized dimensions, preload optimization, lubrication solutions, laser marking, and OEM manufacturing services.

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Request a Quote

Looking for a reliable ZKLDF Rotary Table Bearing Manufacturer? Contact LYDL today for technical drawings, pricing, customization services, and engineering support.

Feature	ZKLDF	YRT	YRTS	YRTM
Speed	⭐⭐⭐⭐⭐	⭐⭐⭐	⭐⭐⭐⭐	⭐⭐⭐
Rigidity	⭐⭐⭐	⭐⭐⭐⭐⭐	⭐⭐⭐⭐⭐	⭐⭐⭐⭐⭐
Friction	⭐⭐⭐⭐⭐	⭐⭐⭐	⭐⭐⭐	⭐⭐⭐
Heat	⭐⭐⭐⭐⭐	⭐⭐⭐	⭐⭐⭐	⭐⭐⭐