GRA 3018
- Brand
- QIBR
- Alternative brand
- SKF
- Measurement system
- Metric
- Bearing model
- NN 3018 KTN9
- Outer diameter
- 120 mm
- Inner diameter
- 90 mm
- Width1
- 37 mm
- Weight
- 1.3 kg
- Shaft diameter
- 90.2 mm
- Size
- 93 mm
- Width2
- 12 mm
- Width3
- 12.4±0.15 mm
- Width4
- 47 mm
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Description
The QGRA 30 series gauges are primarily utilized to inspect tapered shaft seats intended for cylindrical roller bearings within the NN30K series. Additionally, shaft seats for bearings found in the NNU 49 BK and N 10 K series can also be verified using QGRA 30 series gauges. Specifically designed for tapered seats with diameters up to 200 mm, QGRA 30 ring gauges ensure accurate measurements in these applications. For tapered seats exceeding 200 mm in diameter, QIBR recommends using QDMB taper gauges, as handling ring gauges of such size would pose practical challenges due to their weight. This approach ensures effective and reliable inspection across a broad range of bearing installation scenarios, maintaining precision and reliability in industrial settings.
QIBR - GRA 3018 Gauges Characteristics
GRA 3018 Gauges, strong heat resistance, high cost performance. GRA 3018 Gauges, suitable for measurements with high precision requirements.
GRA 3018 QGRA 30 Ring Gauge Characteristics and Advantages
High Precision: Utilizes advanced measurement technology, achieving a measurement accuracy of up to 0.001 mm.
Drop Prevention: The outer steel sleeve acts as a protective ring, preventing the gauge from breaking upon dropping.
User-Friendly: Designed to minimize slipping, allowing for hand operation, which enhances work efficiency. Dirt does not adhere to the instrument.
Good Repeatability: Multiple measurements of the same bearing inner ring yield consistent results, demonstrating high repeatability.
Application: Widely used in the manufacturing, maintenance, and quality inspection of cylindrical parts.
QIBR - GRA 3018 QGRA 30 Ring Gauge Optimization
High-performance materials: Different materials can be selected based on customer needs, such as tungsten steel, ceramics, or steel.
Accuracy: Precision grades can be chosen based on the operational conditions of the workpiece, such as 6g, 6h, 6f, 8g grades, etc.
More customization: QIBR can design and optimize bearings according to customer needs and operating conditions.
QIBR - GRA 3018 QGRA 30 Ring Gauge Quality Control
Dimension measurement: Various high-precision instruments are used to measure multiple dimensions of the QGRA30 ring gauge, achieving a maximum precision of 0.001 mm.
Hardness measurement: The surface hardness of the QGRA30 ring gauge is measured using a hardness tester, with a measurement precision of ±0.5HRC.
Metallographic Analysis: The internal metallographic structure of the metal is analyzed using a professional metallographic microscope.
Raw material control: Procurement of steel and parts from ISO 14001 certified suppliers ensures product stability while promoting sustainable development.
Features & benefits
The QGRA 30 series are typically used to check tapered shaft seats for cylindrical roller bearings in the NN 30K series.
QGRA 30 ring gauges are a tool for precision measurement of bearings and mechanical components, typically used for high-accuracy inspection of cylindrical roller bearings.
Downloads
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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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