XI 12 0288 N

Inner diameter:
216 mm
Outer diameter:
340 mm
Width:
38 mm
Mass:
12 kg

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XI 12 0288 N

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Rolling element type : Roller
Measurement system : Metric
Weight : 12 kg
Outer diameter (Da) : 340 mm
Outer diameter centring length (Da ZT-IT8) : 338 mm
Inner diameter (di) : 216 mm
Internal diameter on outer ring (Di) : 289 mm
External diameter on inner ring (da) : 287 mm
Centring length (da ZT-IT8) : 285 mm
Overall height (H) : 38 mm
Inner ring height (h) : 33 mm
Distance at bottom outer ring-inner ring (T) : 5 mm
Distance at top outer ring-inner ring (t) : 2.5 mm
External bolt circle diameter (La) : 324 mm
Internal bolt circle diameter (Li) : 252 mm
Number of bolt holes at outer ring (na) : 20
Number of bolt holes at inner ring (ni) : 20
Mounting hole diameter (dB) : 9 mm
MAX radial load (frictional contact) : 35 KN
Gear P.C.D. : 224 mm
Module : 4 mm
Number of teeth (z) : 56
Tooth width (b) : 34 mm
Nominal tooth force (Fz norm) : 12.3 KN
MAX permissible tooth force : 17.8 KN
Axial dynamic capacities : 150 KN
Axial static capacities : 290 KN
Radial dynamic load : 95 KN
Radial static load : 141 KN
Gear type : Internal Gear
Temperature : -20℃ to +120℃
Seal type : Closed Type
Weight, Outer diameter (Da), Outer diameter centring length (Da ZT-IT8), Inner diameter (di), Internal diameter on outer ring (Di), External diameter on inner ring (da), Centring length (da ZT-IT8), Overall height (H), Inner ring height (h), Distance at bottom outer ring-inner ring (T), Distance at top outer ring-inner ring (t), External bolt circle diameter (La), Internal bolt circle diameter (Li), Number of bolt holes at outer ring (na), Number of bolt holes at inner ring (ni), Mounting hole diameter (dB), MAX radial load (frictional contact), Gear P.C.D., Module , Number of teeth (z), Tooth width (b), Nominal tooth force (Fz norm), MAX permissible tooth force, Axial dynamic capacities , Axial static capacities, Radial dynamic load, Radial static load, Gear type,

QIBR - XI 12 0288 N Slewing Bearing Advantages and Applications

XI 12 0288 N Slewing Bearing has strong stability and high precision. Inner diameter (di) is 216 mm,Outer diameter (Da) is 340 mm,Overall height (H) is 38 mm,Weight is 12 kg. It is suitable for graders, dynamic tamping machines, oxygen blowing devices, and palletizing robots, etc. and is the most widely used bearing in working conditions requiring high precision.

Weight, Outer diameter (Da), Outer diameter centring length (Da ZT-IT8), Inner diameter (di), Internal diameter on outer ring (Di), External diameter on inner ring (da), Centring length (da ZT-IT8), Overall height (H), Inner ring height (h), Distance at bottom outer ring-inner ring (T), Distance at top outer ring-inner ring (t), External bolt circle diameter (La), Internal bolt circle diameter (Li), Number of bolt holes at outer ring (na), Number of bolt holes at inner ring (ni), Mounting hole diameter (dB), MAX radial load (frictional contact), Gear P.C.D., Module , Number of teeth (z), Tooth width (b), Nominal tooth force (Fz norm), MAX permissible tooth force, Axial dynamic capacities , Axial static capacities, Radial dynamic load, Radial static load, Gear type,

QIBR - XI 12 0288 N Slewing Bearing Characteristics

XI 12 0288 N Slewing Bearing, strong durability, high cost performance, can adapt to harsh environments. XI 12 0288 N Slewing Bearing, can simultaneously bear radial load, axial load and overturning moment, suitable for mechanical equipment with strict precision requirements.

XI 12 0288 N Slewing Bearing Features and Advantages

Compact design: Compact structure, it can be installed in space-constrained environments, and has a wider range of applications.

High load capacity: It can withstand axial, radial and overturning moments at the same time, suitable for heavy-duty applications.

Superior precision: Maintain high precision during use and reduce errors in equipment operation.

High temperature and wear resistance: Made of high-temperature bearing steel, with good wear resistance and strength.

Application: Widely used in lifting machinery, engineering machinery, transportation machinery, mining machinery, metallurgical machinery, medical equipment, ships, warships, radar, wind power generation and other fields.

QIBR - XI 12 0288 N Slewing Bearing Optimization

Grease replacement: Replace grease with other greases such as SFK, Mobil, Krupp, etc. to optimize the working performance and use conditions of the bearing.

Coating optimization: Provide other coatings such as zinc plating or nickel plating to enhance corrosion resistance and wear resistance and extend its service life in harsh environments.

Process optimization: Optimize the bearing production process, increase the bearing operating temperature range, and improve the bearing accuracy and stability.

More customization: QIBR can optimize the bearing structure design according to customers’ drawings or equipment requirements to meet equipment needs.

QIBR - XI 12 0288 N Slewing support bearing quality control

Dimension measurement: Use a variety of professional high-precision instruments to measure multiple dimensions of the bearing, with the highest accuracy up to 0.01mm.

Rotation accuracy: Use a dial indicator to measure small flaws or deviations on the bearing surface, with a measurement accuracy of up to 0.01mm.

Hardness measurement: Use a Leeb hardness tester to measure the bearing surface hardness, with a measurement accuracy of ±6HLD.

Metallographic analysis: Use a professional metallographic microscope to analyze the internal metallographic structure of the metal.

Geometric tolerance: Use a roundness meter to measure the bearing geometry and relative position.

Noise monitoring: Use a vibration meter to monitor the vibration during operation and obtain noise data.

XI 12 0288 N
The outer ring has excellent mechanical performance, with high strength and toughness. After quenching and tempering (Q+T), it exhibits fatigue resistance, impact resistance, and excellent low-temperature impact toughness.
The inner ring has excellent mechanical performance, with high strength and toughness. After quenching and tempering (Q+T), it exhibits fatigue resistance, impact resistance, and excellent low-temperature impact toughness.
Rollers and balls are both types of rolling elements, which are the most crucial components of rotary support bearings and the most commonly used rolling elements in the bearing industry.
It is located between the outer raceway, inner raceway, and rollers/balls of the bearing. It is a isolator block that serves as a cage.
Its role serves two purposes: Firstly, to prevent the loss of lubricating grease or oil inside the bearing, ensuring proper lubrication. Secondly, to shield the bearing from external dust or harmful gases, thus preventing damage.
To ensure the smooth operation of the bearing, it is necessary to inject lubricating grease or oil between the inner and outer rings of the bearing. The function of lubricating grease or oil is to reduce friction coefficient and wear, minimize bearing heat and friction losses, and enhance bearing lifespan.
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