Klingspor SMT 624 Supra Flap Disc 80 Grit | 125mm x 22.23mm | 322775 | Box of 5

Professional Zirconia Alumina P80 Flap Discs for Steel, Stainless Steel, Weld Blending, Surface Refinement and Edge Finishing

Supply Solutions Group supplies Klingspor SMT 624 Supra Flap Discs – 80 Grit – 125mm x 22.23mm – Box of 5 (322775) for fabrication, welding, engineering, mining, construction, manufacturing, maintenance and professional metalworking applications throughout Australia.

The Klingspor SMT 624 Supra is a professional abrasive mop/flap disc designed for demanding grinding and finishing work on steel and stainless steel.

Klingspor’s current Australian technical data confirms catalogue number:

322775

as the:

125mm x 22.23mm – P80

version of the SMT 624 Supra range, with a maximum operating speed of:

12,250 RPM

and maximum peripheral speed of:

80m/s. (Klingspor)

The SMT 624 belongs to Klingspor’s Supra performance class, designed for professional users requiring a strong combination of material removal, consistent abrasive performance and useful service life.

The disc uses zirconia alumina abrasive grain, a durable abrasive particularly suited to metalworking applications involving steel and stainless steel.

The P80 grit provides a finer grinding action than P40 or P60 versions, making this disc particularly useful for:

• Weld blending

• Surface refinement

• Removing moderate grinding marks

• Edge finishing

• Preparing metal before finer finishing

• General fabrication

• Surface conditioning prior to coating or further processing

Klingspor’s abrasive mop disc design uses radially arranged abrasive cloth flaps. The manufacturer notes that this construction produces consistently high abrasive performance while helping minimise vibration during use. (Klingspor)

The SMT 624 is supplied in a convex configuration, making it particularly effective for work on edges and welds where a more concentrated grinding contact area is beneficial.

This Supply Solutions Group listing contains:

1 Box x 5 Klingspor SMT 624 Supra P80 Flap Discs – 125mm x 22.23mm – 322775. (Supply Solutions Group Pty Ltd)

As an Indigenous-owned industrial supplier and procurement partner, Supply Solutions Group provides Klingspor abrasives, flap discs, cutting wheels, grinding discs, sanding products, welding supplies, PPE and industrial consumables backed by responsive customer service, procurement support and Australia-wide business supply capability.

Product Type

• Product Type: Abrasive Flap Disc / Abrasive Mop Disc

• Brand: Klingspor

• Series: SMT 624 Supra

• Catalogue Number: 322775

• Performance Class: Supra

• Abrasive Grain: Zirconia Alumina

• Grit: P80 / 80 Grit

• Diameter: 125mm

• Bore: 22.23mm

• Form: Convex

• Maximum Speed: 12,250 RPM

• Maximum Peripheral Speed: 80m/s

• Suitable Materials: Steel & Stainless Steel

• Manufacturer Packing Unit: 10 Discs

• Supply Solutions Group Pack Quantity: 5 Discs

Key Features

• Genuine Klingspor abrasive product

• SMT 624 Supra professional range

• Catalogue number 322775

• P80 grit

• 125mm diameter

• 22.23mm bore

• Zirconia alumina abrasive grain

• Convex flap-disc configuration

• Professional Supra performance class

• Consistent abrasive performance

• Suitable for weld blending

• Suitable for surface refinement

• Suitable for edge finishing

• Suitable for removing coarser grinding marks

• Suitable for steel

• Suitable for stainless steel

• Suitable for compatible angle grinders

• Maximum 12,250 RPM

• Maximum peripheral speed 80m/s

• Box of 5

Technical Specifications

Specification	Details
Brand	Klingspor
Product	Abrasive Mop / Flap Disc
Series	SMT 624 Supra
Catalogue Number	322775
Performance Class	Supra
Abrasive Grain	Zirconia Alumina
Grit	P80
Diameter	125mm
Bore	22.23mm
Form	Convex
Maximum Peripheral Speed	80m/s
Maximum RPM	12,250 RPM
Suitable Material	Steel
Suitable Material	Stainless Steel
Manufacturer Packing Unit	10
Supply Solutions Group Pack	5 Discs

Klingspor’s current technical sheet specifically lists 322775 as 125 x 22.23mm, P80, convex, 80m/s and 12,250 RPM. (Klingspor)

Packaging note: Klingspor’s standard manufacturer packing unit is 10 discs, while this Supply Solutions Group listing is specifically offered as a Box of 5. (Klingspor)

Typical Applications

• Weld blending

• Weld seam refinement

• Surface finishing

• Surface preparation

• Edge grinding

• Edge finishing

• Removing P40/P60 grinding marks

• Steel fabrication

• Stainless-steel fabrication

• Metal finishing

• Fabrication repairs

• Structural steelwork

• Workshop maintenance

• General metalworking

• Preparation before coating or finer finishing

Suitable Industries

• Welding and fabrication

• Engineering

• Mining and resources

• Construction

• Manufacturing

• Metal fabrication

• Stainless-steel fabrication

• Structural steel

• Industrial maintenance

• Automotive

• Transport

• Infrastructure

• Utilities

• Mechanical workshops

• Trades and contracting

Why Choose Klingspor SMT 624 Supra 80 Grit?

The SMT 624 Supra P80 is well suited to metalworking applications where the operator needs a smoother finish than coarse P40 or P60 abrasives while retaining useful material-removal capability.

P80 is particularly practical for:

• Refining weld areas

• Smoothing grinding marks

• Finishing fabricated edges

• Preparing steel before subsequent finishing

• Producing a more uniform surface prior to coating

The disc combines this medium-fine grit with Klingspor’s professional SMT flap-disc construction.

Zirconia Alumina Abrasive Grain

Klingspor abrasive mop discs are available with several abrasive types, including zirconia alumina, which is widely used in professional metal grinding because of its durability and strong cutting characteristics. (Klingspor)

For the SMT 624 Supra, this abrasive makes the disc particularly useful for:

• Mild steel

• Structural steel

• Stainless steel

• Welded components

• Fabricated metalwork

P80 Grit

This model uses:

P80 Grit

P80 sits between coarse stock-removal grades and finer finishing abrasives.

Compared with:

P40 – P80 provides a smoother finish and removes material less aggressively.

Compared with:

P60 – P80 provides finer scratch refinement.

Compared with:

P120 – P80 provides greater cutting action while leaving a somewhat coarser finish.

This makes P80 a versatile intermediate finishing grade.

125mm Diameter

Each disc has a nominal diameter of:

125mm

making it suitable for compatible 125mm angle grinders operating within the disc’s maximum speed rating.

22.23mm Bore

Klingspor specifies the bore precisely as:

22.23mm. (Klingspor)

Commercial listings may sometimes round this to 22mm or 22.3mm.

Always confirm grinder spindle, flange and disc compatibility before installation.

Convex Design

The SMT 624 322775 uses a:

Convex Form

Klingspor explains that convex abrasive mop discs operate over a smaller contact area and can produce higher local stock removal, making them particularly suitable for edges and weld removal or blending. (Klingspor)

This configuration is especially practical for:

• Weld seams

• Corners

• Fabricated edges

• Bevelled surfaces

• Contoured metalwork

Weld Blending

P80 makes the SMT 624 particularly useful after coarse weld grinding.

A typical progression may involve:

1. Coarse abrasive for heavy weld removal.

2. P60 for intermediate blending.

3. P80 for refining the surface.

4. Finer abrasive where an even smoother finish is required.

The exact sequence depends on the required finish and substrate.

Steel Applications

The SMT 624 range is designed for professional metal processing, including appropriate steel applications.

Typical uses include:

• Fabricated steel frames

• Structural components

• Weld seams

• Plate

• Pipe

• General workshop components

Stainless Steel Applications

The SMT 624 is also suitable for stainless steel.

When grinding stainless steel, workshops should follow appropriate contamination-control practices if maintaining stainless-steel surface integrity is important.

This may include using dedicated abrasives and tools rather than those previously used on carbon steel.

Surface Refinement

The P80 grit makes this disc particularly useful where the objective is not simply to remove maximum stock, but to improve surface consistency.

Applications may include:

• Refining coarse grinder marks

• Smoothing welded joints

• Preparing surfaces before coating

• Preparing surfaces for subsequent finer abrasives

Maximum 12,250 RPM

Klingspor specifies for catalogue number 322775:

Maximum Speed: 12,250 RPM

and:

Maximum Peripheral Speed: 80m/s. (Klingspor)

Never operate the disc above its rated maximum speed.

Before use, confirm that the angle grinder’s speed is compatible with the abrasive.

Angle Grinder Compatibility

The 125 x 22.23mm SMT 624 is designed for appropriate angle-grinder applications.

Before mounting:

• Confirm grinder diameter capacity

• Check bore compatibility

• Check spindle and flange condition

• Verify maximum RPM

• Inspect the grinder guard

• Inspect the disc for damage

• Secure the disc correctly

Box of 5

This Supply Solutions Group listing contains:

5 x Klingspor SMT 624 Supra P80 Flap Discs – 322775. (Supply Solutions Group Pty Ltd)

The five-disc pack is practical for:

• Mobile tradespeople

• Fabrication workshops

• Maintenance crews

• Engineering departments

• Site stores

• Small-to-medium consumption requirements

Manufacturer Pack vs Supply Solutions Group Pack

Klingspor’s technical sheet lists:

10 Discs per Manufacturer Packing Unit

for catalogue number 322775. (Klingspor)

Supply Solutions Group offers this particular listing as:

Box of 5

allowing customers to purchase a smaller quantity without committing to the full manufacturer pack. (Supply Solutions Group Pty Ltd)

Safety Considerations

Grinding operations can generate:

• Sparks

• Abrasive fragments

• Metal particles

• Dust

• Significant noise

Appropriate PPE may include:

• Safety glasses or goggles

• Face protection

• Hearing protection

• Protective gloves

• Suitable clothing

• Safety footwear

• Respiratory protection where required

PPE selection should be based on the actual workplace hazard.

Disc Inspection

Before every use:

1. Inspect the abrasive disc.

2. Confirm it is not cracked, damaged or excessively distorted.

3. Check the bore and mounting area.

4. Confirm the grinder guard is fitted.

5. Ensure the grinder does not exceed 12,250 RPM.

6. Mount according to the grinder manufacturer’s instructions.

Never use a damaged abrasive disc.

Storage & Handling

To maintain abrasive condition:

• Store in a clean, dry environment

• Protect from water and excessive humidity

• Avoid excessive heat

• Do not bend or crush discs

• Keep discs appropriately packaged

• Inspect before use

• Avoid contamination where stainless-steel processing is required

Why Buy from Supply Solutions Group?

Supply Solutions Group supplies professional abrasives, fabrication products, PPE and industrial consumables to organisations throughout Australia.

Benefits of Partnering with Supply Solutions Group

• Australia-wide business supply capability

• Indigenous-owned business

• Klingspor abrasives

• SMT 624 Supra flap discs

• Zirconia alumina abrasives

• Cutting discs

• Grinding discs

• Sanding products

• Surface-conditioning products

• Welding consumables

• Fabrication supplies

• Angle-grinder accessories

• Safety eyewear

• Face protection

• Hearing protection

• Respiratory PPE

• Mining consumables

• Construction supplies

• Manufacturing supplies

• Industrial consumables

• Procurement consolidation

• Trade account options

• Bulk purchasing solutions

• Product sourcing assistance

• Responsive customer service

• Recurring commercial supply arrangements

Frequently Asked Questions

What is Klingspor 322775?
It is the Klingspor SMT 624 Supra P80 flap disc measuring 125 x 22.23mm. (Klingspor)

What grit is catalogue number 322775?
P80 / 80 grit.

What size is the disc?
125mm diameter x 22.23mm bore. (Klingspor)

Is the bore sometimes described as 22.3mm?
Yes. 22.3mm is a rounded commercial description; Klingspor specifies 22.23mm.

What abrasive grain does the SMT 624 use?
The SMT 624 uses zirconia alumina abrasive grain.

What is P80 grit suitable for?
P80 is suited to intermediate and finishing work such as weld blending, surface refinement, smoothing grinder marks and preparing surfaces for finer finishing.

Is P80 finer than P60?
Yes. P80 produces a finer scratch pattern than P60.

Is P80 finer than P40?
Yes. P80 is substantially finer and less aggressive than P40.

Is P80 coarser than P120?
Yes. P80 removes material more aggressively than P120.

Is it suitable for steel?
Yes.

Is it suitable for stainless steel?
Yes.

Can it be used for weld blending?
Yes. P80 is particularly useful for refining weld areas after coarser grinding.

Is the disc convex?
Yes. Klingspor lists catalogue number 322775 as Form P / convex. (Klingspor)

Why use a convex flap disc?
Klingspor notes that convex flap discs provide a smaller contact area and are particularly useful for edges and weld processing. (Klingspor)

What is the maximum operating speed?
12,250 RPM / 80m/s. (Klingspor)

How many discs are included in this listing?
This Supply Solutions Group listing contains 5 discs. (Supply Solutions Group Pty Ltd)

What is Klingspor’s standard manufacturer packing quantity?
Klingspor lists 10 discs per packing unit for 322775. (Klingspor)

Why does Supply Solutions Group sell a box of 5?
Supply Solutions Group offers a smaller 5-disc configuration, providing customers with an alternative to purchasing the full manufacturer pack. (Supply Solutions Group Pty Ltd)

Is this in the same range as Klingspor 322772 and 322774?
Yes. They are all 125 x 22.23mm SMT 624 Supra discs:

• 322772 – P40

• 322774 – P60

• 322775 – P80

• 322776 – P120. (Klingspor)

Can Supply Solutions Group provide other SMT 624 grits?
Yes. Klingspor’s current 125 x 22.23mm range includes P36, P40, P60, P80 and P120. (Klingspor)

Can Supply Solutions Group provide bulk or recurring quantities?
Yes. Bulk and ongoing procurement arrangements are available for fabricators, manufacturers, mine sites, construction businesses, engineering workshops and industrial maintenance operations.