ZKLF 2068 2Z
- Brand
- QIBR
- Alternative brand
- INA
- Rolling element type
- Ball
- Measurement system
- Metric
- Inner diameter
- 20 mm
- Outer diameter
- 68 mm
- Total width
- 28 mm
- Outer diameter of inner ring
- 34.5 mm
- External hole circle diameter
- 53 mm
- Hole diameter at outer ring
- 6.8 mm
- Width snap ring groove
- 3 mm
- Distance groove
- 19 mm
- Chamfer dimension1
- 0.3 mm
- Chamfer dimension2
- 0.6 mm
- Inner diameter tolerance
- 0 to -0.005 mm
- Outer diameter tolerance
- 0 to -0.01 mm
- Width tolerance
- 0 to -0.25 mm
- Basic dynamic load rating (axial)
- 28.5 kN
- Basic static load rating (axial)
- 47 kN
- Fatigue load limit
- 2.75 kN
- Limiting speed
- 8700 r/min
- Thermally safe operating speed
- 5400 r/min
- Bearing frictional torque
- 0.15 Nm
- Rigidity
- 650 N/μm
- Tilting rigidity
- 140 Nm/mrad
- Mass moment of inertia
- 0.273 kg.c㎡
- Axial runout
- 2 μm
- Weight
- 0.61 kg
- Temperature
- -30℃ to +120°C
- Seal type
- Closed Type
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Description
Application : Combined Precision Bearing is precision integrated bearings capable of simultaneously withstanding axial loads, radial loads, and tilting moments; they are widely used in fields such as precision machine tools, industrial robots, construction machinery, medical equipment, and aerospace.
Subseries :
YRT&YRTC
YRTS
ZKLDF
...
Specifications :
Outer Diameter (D) : 50mm-1300mm
Inner Diameter (d) : 126mm-600mm
Overall Width (H) : 30mm-145mm
...
ZKLF 2068 2Z Combined Precision Bearing Features and Advantages
High load capacity: Combined precision bearing can withstand axial loads, radial loads, and overturning moments, making them suitable for high-load applications.
High Precision: The dimensional accuracy is at P5 level, and the rotational accuracy is at P4 level, ensuring high rotational precision.
Superior Rigidity: These bearings exhibit higher stiffness when subjected to overturning moments, maintaining good performance under high load conditions.
Low Operating Noise: They generate low noise during operation, making them ideal for use in noise-sensitive environments.
Application: Combined precision bearing are widely used in precision rotary tables, vertical grinding machines, indexing heads, gear hobbing machines, CNC machine tools, radar systems, and high-precision medical equipment.
QIBR - ZKLF 2068 2Z Combined Precision Bearing Optimization
High-performance materials: The bearing materials can be replaced based on different working conditions, such as GCr15, GCr15SiMn, S165M, etc.
Cage Material: The cage material can be replaced according to customer requirements, such as using 20# steel, brass, or polyamide nylon.
Grease Replacement: The grease can be substituted with other lubricants, such as Mobilith SHC 220 or Shell Gadus S2 V220.
Grease replacement: QIBR technicians can recommend grease according to the working conditions of the bearing or replace grease according to customer needs, such as Mobil, Shell, SKF, Fuchs and other brands.
More customization: QIBR can design and optimize bearings based on customer specifications and operational requirements.
QIBR - ZKLF 2068 2Z Combined Precision Bearing quality control
Dimension measurement: Various high-precision instruments are used to measure multiple dimensions of the bearings, achieving a maximum accuracy of 0.001mm.
Rotation accuracy: A dial gauge is employed to measure small defects or deviations on the bearing surface, with measurement accuracy reaching 0.001mm.
Hardness measurement: The surface hardness of the bearings is measured using a hardness tester, with an accuracy of ±0.5HRC.
Metallographic analysis: Professional metallographic microscopes are used to analyze the internal metallographic structure of the metal.
Geometric tolerance: A profile projector is used to measure the geometric shape and relative position of the bearings.
Noise monitoring: Vibration monitors are utilized to track the vibration conditions during operation, providing noise data.
Raw material control: Steel and components are sourced from suppliers with ISO 14001 certification, ensuring product stability while promoting sustainable development.
Features & benefits
ZKLF series Angular Contact Thrust Ball Bearings are high-performance bearings designed for high axial loads, high rigidity and precision applications, especially for machine tools, automation equipment, heavy machinery and other fields. The optimized contact angle design (usually 60°) can withstand extremely high unidirectional or bidirectional axial loads while taking into account certain radial loads. The double-row design (ZKLF..PE variant) can withstand bidirectional thrust loads at the same time, without the need for additional paired bearings, simplifying the structure. High rigidity, suitable for high load and high impact conditions (such as large stamping machines and heavy machine tools).
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Bearing condition questionnaire
Bearing Condition Questionnaire
Agency document
Agent Application Form
Product brochure
Slewing & Cross Roller Bearing Catalog
Product brochure
Bearing Unit Catalog
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