UNPARALLELED LTD is one of the leading manufacturers and suppliers of granite t‑slot plate in China. With abundant experience, we warmly welcome you to buy advanced granite t‑slot plate made in China here from our factory. We also accept custom orders.
Product Overview
The granite T‑slot plate adopts UNPARALLELED® high‑density black granite as raw material. It undergoes strict natural stress‑relief aging, precision lapping and T‑slot machining in constant‑temperature workshop. It is an ultra‑precision tooling plate integrating reference measurement and workpiece clamping.
Multiple customized T‑slots on the top surface allow fast fixing of workpieces, fixtures and gauges with T‑bolts. The large lapped datum surface supports dimension inspection and dial‑gauge verification for assembly and commissioning. It solves the clamping limitation of ordinary granite surface plates.
| Brand | UNPARALLELED® |
| Thermal Expansion Coefficient | ≤3×10⁻⁶/℃ |
| Accuracy Grade | 000 / 00 / 0 |
| Standards | DIN875‑1, GB/T 22762 |
| Key Properties | Non‑magnetic, rust‑free, high vibration damping, low internal stress, excellent long‑term dimensional stability |
Quality Control
Core Advantages
I.Dual‑function design for measurement and clamping High‑precision lapped datum surface for dial‑gauge inspection and verification. Built‑in T‑slots allow direct clamping of workpieces and fixtures with T‑bolts, solving the clamping limitation of ordinary granite surface plates.
Ⅱ.Excellent dimensional stability Made of UNPARALLELED® high‑density granite. Thermal expansion coefficient ≤3×10⁻⁶/℃. Sufficient natural aging relieves internal stress. Long‑term deformation‑free performance with 5‑year accuracy drift ≤0.2 μm.
Ⅲ.Superior vibration‑damping capacity High material damping absorbs external vibration interference, ideal for precision inspection, semiconductor and optical‑equipment applications.
Ⅳ.Non‑magnetic and rust‑proof Non‑magnetic without iron‑chip attraction. Zero rust risk, resistant to slight oil contamination. No anti‑rust coating required, suitable for metrology labs and workshop environment.
Ⅴ.High wear resistance & long service life Datum faces are fine‑lapped in constant‑temperature workshop. Chamfered T‑slot opening reduces chipping risk.
Ⅵ.Traceable quality assurance Unique laser‑engraved serial number for each unit, supplied with calibration certificate, compliant with DIN and GB standards. Adhere to "no deception, no concealment, no misleading" principle.
Ⅶ.Fully customizable Overall size, T‑slot width, slot pitch and lifting holes are configurable to match customer bolt specifications and tooling layout.
Application Fields
Precision Metrology Laboratories Metrology institutes and testing labs, used as reference tooling plate for workpiece inspection, gauge calibration and dial‑gauge measurement.
Precision Mechanical Assembly & Commissioning Assembly, positioning and correction of precision machine tools and automation equipment components.
Tooling & Fixture Industry Base plate for custom checking fixtures, mounting jigs and positioning assemblies for fast workpiece clamping.
Semiconductor & Precision Instrument Industry For semiconductor inspection equipment, optical instruments and vision measuring machines. Good vibration‑damping meets high‑accuracy requirements.
Universities & Scientific Research Institutes Experimental platform for laboratory research, prototype setup and sample inspection.
Mold & Auto‑parts Industry Mold inspection and geometric tolerance testing for automotive components after clamping.
CMM Auxiliary Tooling Work‑holding base plate cooperating with coordinate measuring machines for workpiece measurement.
Service
Maintenance & Protection
Storage Environment: Store in dry, dust‑free indoor space with stable temperature. Avoid outdoor exposure and keep away from moisture, acid and alkali corrosive substances.
Handling Protection: Use lifting holes for transportation. Never drag the plate surface. Avoid impact or knocking, as granite is brittle and easy to chip.
Cleaning Method: Wipe datum surface with lint‑free cloth dipped in anhydrous ethanol or special stone cleaner. Do not use sandpaper or steel wool. Strong acid and alkali cleaners are forbidden. Remove metal chips timely to prevent scratches on datum face and T‑slot inner walls.
Operation Requirements: Place workpieces and fixtures gently, do not drop onto the plate. T‑bolts shall be tightened with moderate torque; over‑tightening will damage T‑slots. Adopt 3‑point adjustable support stands to ensure uniform stress and prevent distortion.
Accuracy Maintenance: Re‑check flatness periodically. Do not repair scratches by yourself. Return to factory for professional re‑lapping if surface is damaged.
Forbidden Operations: No cutting, welding or knocking on the plate surface. Keep high‑temperature operation away to prevent surface thermal damage.
Common Notes
Granite is brittle, avoid impact and drop.
T‑slots are only for T‑bolt clamping, no heavy knocking allowed.
Must use 3‑point supports on uneven floor; do not lay flat directly on ground.
Sharp temperature fluctuation will cause temporary accuracy change. Constant‑temperature environment is recommended.
certificate
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