GB 4921

GB 4921 · Product image

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Brand
QIBR
Alternative brand
SKF
Measurement system
Metric
Width
128 mm
Height
143 mm
Weight
3 kg

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Description

QIBR's internal clearance gauges in the QGB 49 series are specifically engineered to provide precise measurements for double row cylindrical roller bearings, covering models from NNU 4920 BK to NNU 4960 BK. These gauges are designed to accurately assess the internal envelope diameter of the roller set when rollers make contact with the outer ring raceway. This capability ensures meticulous verification of dimensional integrity, crucial for ensuring optimal functioning and assembly consistency in various industrial applications. The QGB 49 series stands as a testament to QIBR's commitment to high-precision tools that support quality assurance in manufacturing processes.

QIBR - GB 4921 Gauges Advantages and Applications

GB 4921 Gauges, high precision, strong wear resistance, Height is 143 mm, Width is 128 mm, Weight is 3 kg, suitable for measuring radial clearance, assembly clearance and wear clearance, etc., and is the most widely used gauge in working conditions with high precision requirements.

QIBR - GB 4921 Gauges Characteristics

GB 4921 Gauges, long life, high cost performance. GB 4921 Gauges, suitable for measurements with high precision requirements.

GB 4921 QGB 49 Internal Clearance Gauge Features and Advantages

Structural Design: The gauge features a groove design, where two halves of the measuring ring jointly bear the appropriate pressure of the roller assembly, effectively preventing damage to the rollers or the measuring area.

High Precision: For sizes ≤ 38 (QGB 4920 to QGB 4938), the precision is less than 1 μm; for sizes ≥ 40 (QGB 4940 to QGB 4960), it is less than 2 μm.

Adjustment Function: Equipped with adjustment screws, the gauge body can be compressed to facilitate smooth insertion into the roller assembly, enhancing operational convenience.

Application: Primarily used for measuring the internal clearance of double-row cylindrical roller bearings, it finds extensive applications in mechanical manufacturing, medical devices, power equipment, automotive industry, and aerospace fields.

QIBR - GB 4921 QGB 49 Internal Clearance Gauge Optimization

Surface Treatment: The surface of the gauge can be treated according to customer requirements and working environments, with coatings such as titanium nitride and titanium aluminum nitride.

Heat Treatment: Appropriate heat treatments, such as quenching and tempering, are applied to enhance hardness and wear resistance.

More customization: QIBR can optimize and customize the gauge's accuracy and dimensions according to customer requirements.

QIBR - GB 4921 QGB 49 Internal Clearance Gauge Quality Control

Dimension measurement: Various specialized high-precision instruments are used to measure multiple dimensions of the QGB30 and QGB10 internal clearance gauges, achieving a maximum precision of 0.001 mm.

Hardness measurement: The surface hardness of the QGB30 and QGB10 internal clearance gauges is measured using a hardness tester, with a measurement precision of ±0.5 HRC.

Metallographic Analysis: Professional metallographic microscopes are used to analyze the internal metallographic structure of the metal.

Raw material control: Steel and components are sourced from ISO 14001 certified suppliers, ensuring product stability while promoting sustainable development.

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