Grid Angle Plate

OEM or ODM service: we offer a wide range of services from standard Cast Iron Angle Plates to custom order as per request.

Calibration Certificate: EX-works inspection reports offered by our Quality Inspection Department are included with every surface plate, “Calibration Certificate” is available upon request at extra cost.

Delivery Costs: calculated during the checkout process.

Key Features:

• Made from high quality Cast Iron.

• Heat-treated for stress relief.

• High strength, High precision, High hardness.

• Finer accuracies can also be achieved on request at extra cost.

• Customized and specifically designed as customers’ requirement.

These features make HENGFENG one of the best Cast Iron Angle Plates manufacturers in the industry.

Hengfeng's 90 degree angle plate—also known as the Grid Angle Plate—is designed to provide an exact right-angle reference for large workpieces in machining, layout, and inspection. Constructed from premium HT200, HT250, or HT300 cast iron, this grid angle plate features one face precisely machined perpendicular to the base (90°), ensuring that vertical and horizontal surfaces remain square under heavy loads. The face can be square or rectangular, allowing maximum workpiece access by positioning nearly or even beyond the centerline of your machine pallet.

Key configuration options include:

• Material Grades: HT200, HT250, HT300 (selected for optimal rigidity and vibration damping).

• Grid Spacing & Hole Sizes:

• 40 mm spacing with Ø12 mm/M12 grid holes

• 50 mm spacing with Ø12 mm/M12 grid holes

• 50 mm spacing with Ø16 mm/M16 grid holes

These pre-drilled grid patterns enable rapid fixture setups using standard dowel pins or M12/M16 clamping hardware. Standard models cover plate dimensions from 300 × 300 × 220 mm up to 800 × 800 × 525 mm; additional sizes and hole-pattern combinations are available on request to match your specific machining envelope.

Grid spacing 40, Ø12/ M12

Grid spacing 50, Ø12/ M12

Grid spacing 50, Ø16/ M16

*Other sizes & combinations can be manufactured as per requirement.

Product Advantages

1. Absolute 90° Accuracy

• Every face is ground and lapped to a flatness tolerance of ≤ 0.02 mm and perpendicularity within ≤ 0.02 mm/100 mm. This guarantees that when workpieces are clamped against the face, their vertical surfaces remain truly plumb and square to the machine table.

2. High‐Strength Cast Iron Construction

• HT300 provides superior compressive strength and wear resistance for heavy-duty milling or boring operations. Its inherent damping properties reduce chatter, improving surface finishes on critical components.

3. Stress‐Relieved Core & Ribbed Design

• Each angle plate is heat‐treated at controlled temperatures to release internal casting stresses. The ribbed underside structure adds stiffness without significantly increasing weight, preventing deformation under heavy clamping forces.

4. Versatile Grid Layout (Locator Grid)

• Uniform Ø12 mm or Ø16 mm hole patterns (at 40 mm or 50 mm centers) allow fast, repeatable positioning of fixtures and dowel pins. Operators can index multiple fixtures or directly mount large jigs at precise 90° orientations, reducing setup time by up to 30 %.

5. Customizability & Modularity

• Beyond standard sizes, Hengfeng offers OEM/ODM services to accommodate non-standard dimensions, mixed hole diameters (e.g., combining M12 and M16), integrated T-slots, or threaded fixtures. This ensures your 90 degree angle plate aligns perfectly with existing tool sets and clamping kits.

6. Long‐Term Dimensional Stability

• Following a controlled annealing process, plates exhibit minimal thermal distortion and maintain accuracy even after years of continuous shop-floor use. A light rust-preventive coating is applied; optional black-oxide or electrophoretic finishes are available for corrosive environments.

Product Applications

• CNC Machining & Milling
  Use the 90 degree angle plate as a stable vertical reference for machining large castings or blocks. The grid holes allow direct mounting of fixtures, enabling multi-face machining without relocating the workpiece.

• Toolroom Layout & Fabrication
  In toolmaking, the angle plate functions as a precision datum for scribing, drilling, or grinding operations. The perpendicular faces enable accurate transfer of measurements and layout lines onto workpieces.

• Inspection & Quality Control
  When combined with dial indicators or height gauges, the 90 degree angle plate serves as a precision reference surface—ideal for checking flatness, squareness, or verifying jig alignment. The uniform grid assists in repeatable setups for batch inspections.

• Fixture & Jig Production
  Fixture builders leverage the grid pattern to create dedicated holding fixtures. Dowel pins inserted into the grid ensure that custom jigs can be indexed consistently, assuring that each workpiece aligns accurately during production runs.

• Large Workpiece Clamping (Angle Plate Tombstone)
  As a single-face tombstone, this angle plate positions near or beyond the centerline of machining pallets, maximizing usable work envelope. It is especially suited for tall, heavy parts—such as aerospace brackets or automotive engine blocks—where maintaining a true 90° orientation is critical.

Harness the efficiency of pre-drilled locator grids and the stability of heat-treated cast iron—contact Hengfeng today to specify your next angle plate solution.