Qing Yang® manufactures 6 inch T42 depressed center cutting discs in 150×3.0×22.2mm specification (6″ x 1/8″ x 7/8″) for OEM buyers and hardware distributors who require a Type 27 guard-compatible 6 inch disc for heavier cutting loads. The depressed center T42 structure is the defining feature: the recessed hub raises the disc body above the grinder guard flange, allowing bevel cuts, angle-entry cutting, and weld-access operations that a flat T41 disc cannot handle in the same way.
At 3.0mm thickness, this disc is positioned for higher lateral stability and greater resistance under off-axis cutting pressure than thinner 6 inch cut-off wheels. It is intended for fabrication shops, pipe fitting work, welded assembly cutting, and heavy-duty general metal cutting where disc rigidity and operational control are more important than minimum kerf width.
T42 Depressed Center — What It Changes in Practice
The key difference between a T41 flat disc and a T42 depressed center disc is not abrasive formula alone, but guard compatibility and approach angle. A T41 flat disc uses a Type 1 flat guard and is intended for perpendicular entry. A T42 depressed center disc is used with a Type 27 depressed-center guard, which allows the disc face to clear the guard rim and reach the workpiece at oblique angles.
In practice, this makes the 6 inch T42 disc suitable for:
- Bevel and angle cuts on flat bar, angle steel, and steel plate
- Pipe weld seam access where a straight-on cut is blocked by surrounding geometry
- Flush cutting on welded assemblies
- Heavy-duty angle-entry cutting on metal and stainless steel
Especificaciones Técnicas
Type: T42 — Depressed Center Cut-Off Wheel
Outer Diameter: 150mm (6 inch)
Thickness: 3.0mm (1/8 inch)
Bore: 22.2mm (7/8 inch)
Imperial Spec: 6″ × 1/8″ × 7/8″
Grade Code: T42A/F60T4BF
Max Operating Speed: 10,200 RPM
Max Peripheral Speed: 80 m/s
Guard Compatibility: Type 27 Depressed-Center Guard
Abrasive: Aluminum Oxide (A)
Bond: Reinforced Resin (BF)
Reinforcement: Double Fiberglass Mesh
Application: Metal, Stainless Steel (Inox)
Certifications: EN 12413, ISO 9001, MPA Hannover, CQC
Important — guard type check before mounting: T42 depressed center discs must be used with a Type 27 depressed-center guard. Do not mount a T42 disc on an angle grinder fitted with a Type 1 flat guard. The guard type is normally stamped on the guard body or listed in the grinder’s manual.
Cutting Applications
Bevel and angle-entry cutting on flat bar and plate
The 3.0mm thickness provides higher lateral stiffness during oblique cutting, which is important when the grinder enters the workpiece at an angle rather than perpendicular to the surface.
Pipe weld seam cutting and joint access
The T42 depressed center geometry is suitable for pipe fitting, weld seam access, and joint cutting where the grinder body would otherwise interfere with the cutting line.
Flush cutting on welded assemblies
For tack weld removal, bracket release, gusset cutting, and other welded-assembly work, the depressed center hub allows better clearance than a flat Type 1 disc.
Heavy-duty 6 inch cutting for Type 27 guard grinders
For end users operating 6 inch angle grinders fitted with Type 27 guards, the 150×3.0×22.2mm T42 disc serves as a heavier-duty option within the 6 inch range.
OEM Factory Supply
MOQ is 100,000 pieces for full private label orders including custom blotter printing, branded inner retail box, and master export carton with your barcode. Mixed-container loads combining T42 and T41 disc SKUs are accepted within a single 40ft FCL. Standard production lead time is 15–25 days after order confirmation and deposit. Sample packs are dispatched within 5 business days.
FOB Ningbo / FOB Shanghai. CIF available on request for container shipments.
Frequently Asked Questions
The T42 disc has a depressed center hub — the center bore section is recessed below the disc face, so when mounted on a Type 27 guard, the disc body sits elevated above the guard flange. This allows the disc face to contact the workpiece at oblique angles without the grinder body interfering. The T41 flat disc has no recess: the disc face and center bore are coplanar, requiring a Type 1 flat guard and a perpendicular cutting approach. Both the T41 and T42 in the 6 inch range use the same 22.2mm (7/8 inch) spindle bore and run at Max 10,200 RPM. The difference is geometric and operationally important for bevel cutting, flush approach, and weld access.
No. The T42 depressed center profile requires a Type 27 depressed-center guard. Mounting a T42 disc on a Type 1 flat guard creates incorrect hub-to-guard alignment and should not be specified. If your end users operate grinders with Type 1 guards, a T41 flat disc is the correct disc type.
The 150×3.0×22.2mm T42 disc is 3.0mm thick (6″ x 1/8″ x 7/8″). In the 6 inch range, the T41 discs are available in 1.2mm (6″ x 3/64″ x 7/8″) for ultra-thin confined-access cutting and 1.6mm (6″ x 1/16″ x 7/8″) for general-purpose cutting. The T42 at 3.0mm provides greater lateral stiffness and better control under off-axis and oblique cutting loads than the thinner T41 profiles.
Standard MOQ is 100,000 pieces for full private label orders including custom blotter printing, branded inner retail box, and master export carton with your barcode. Mixed-container loads combining T42 and T41 disc SKUs are accepted within a single 40ft FCL. Production lead time is 15–25 days after order confirmation and deposit. Sample packs are dispatched within 5 business days.
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