UNPARALLELED LTD is one of the leading manufacturers and suppliers of v-blocks for precision measurement in China. With abundant experience, we warmly welcome you to buy advanced v-blocks for precision measurement made in China here from our factory. We also accept custom orders.
PRODUCT DETAILS
Granite V-blocks are essential tools used in precision engineering for inspecting, clamping, and aligning cylindrical workpieces. Made from premium natural granite, these blocks are carefully ground and lapped to provide excellent dimensional stability and accuracy.
Unlike traditional metal V-blocks, granite models are non-magnetic, rust-proof, and resistant to thermal expansion, making them ideal for high-precision applications in laboratories, workshops, and production environments.
Product Advantages:
✅ Superior Accuracy:
Manufactured to strict tolerances with high flatness, parallelism, and squareness. Available in precision grades up to 1μm.
✅ Stable and Non-Magnetic:
Granite offers excellent dimensional stability with zero magnetic interference - perfect for use with sensitive instruments.
✅ Excellent Wear Resistance:
Granite V-blocks are highly resistant to scratches, corrosion, and chemical damage, ensuring long-term durability in industrial environments.
✅ No Deformation:
Unlike metal blocks, granite does not warp or deform due to temperature changes, maintaining consistent accuracy.
✅ Custom Sizes on Request:
Standard sizes include 40×90 mm, 63×90 mm, 100×90 mm, and 160×90 mm. Custom designs and matching pairs are available.
Typical Applications
Precision measurement and inspection of shafts, rods, or cylinders
Tool setup and alignment
Support for cylindrical parts during machining or marking
Use in metrology labs, CNC workshops, and quality control departments
OVERVIEW
| Item | Details |
|---|---|
| Brand | UNPARALLELED |
| Material | Natural Black Granite |
| Color | Pure Black |
| Density | Approx. 3070 kg/m³ |
| Origin | Jinan, Shandong, China |
| Material Origin | Jinan (China), India, South Africa |
| Condition | New / Custom Made |
| Precision | 1 μm or higher |
| Standard | DIN, GB, ASME, JIS |
| Application | CNC Machining, Laser Equipment, Metrology & Calibration |
| Certificate | ISO 9001, CE |
| Technical Support | Inspection, Calibration, Assembly |
| Packaging | Custom Export Packaging |
| Payment Terms | T/T, L/C, and more |
| Price Terms | EXW, FOB, CIF, DAP, CPT, etc. |
| Service | Engineering Drawings / Custom Design Support |
| Keyword | Granite Air Bearing |
QUALITY CONTROL
Laser Interferometer
Electric Level
Roughness Meter
Vernier Caliper
Dial Gauge
Inductance Micrometer
Why Choose Our Granite V-Blocks?
If your work demands absolute precision, long service life, and consistent performance, granite V-blocks are the ideal solution. They are widely trusted in aerospace, automotive, manufacturing, and metrology sectors for their reliability and accuracy.
FACTORY DISPLAY
CERTIFICATES
Packaging & Delivery
- Packaging: Custom export-safe wood crate or foam-packed boxes
- Delivery Terms: EXW, FOB, CIF, DAP, CPT
- Payment: T/T, L/C
- Shipping Origin: Jinan, China
FAQ
What are granite blocks used for?
Granite blocks are used in construction and landscaping for their strength, durability, and aesthetic appeal, making them suitable for structural and decorative applications.
What are the advantages of V-Blocks?
This design is not just a matter of form but serves the critical function of holding cylindrical or round workpieces securely during various machining operations. The V-shape provides stability & precise alignment by cradling the workpiece, which is essential for operations demanding high accuracy.
What are V-Blocks mainly used for?
V-Blocks are precision metalworking jigs typically used to hold round metal rods or pipes for performing drilling or milling operations.
What is the purpose of grooves provided in the V-Blocks?
The V-shaped grooves in the block are designed to cradle and support the workpiece, providing stability and precise alignment. The angle of the V-grooves is usually 90 degrees, creating a V-shaped channel when two V-blocks are paired together.
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