Quick Answer

Most bad orders do not fail on quality — they fail on specification. Before you place a container order of grinding blocks for Brazil, fix five things in writing: the connection on your grinding head, the grit range the floor needs, the bond for your slab, the number of blocks per head plus a spare set, and the receiving check you will run on arrival. Get those five right and the second order becomes routine.

Step 1 — Identify the Connection, Not the Brand

Tooling is sold by platform, not by diamond. A Husqvarna Redi Lock block will not seat on a Lavina quick-change head, and Diamatic plates take M6 bolts on a spacing that is not the universal three-hole layout. Photograph the underside of the plate with a ruler across the holes, write down the hole diameter (M6 thread or 9 mm clearance) and the centre-to-centre distance, and send that photo with the enquiry.

Platform	Connection	Block family to order
Universal trapezoid head	M6 or 9 mm, three holes	JOY-TP-R3 / TP-S2 / TP-ZG2 / TP-O2
Husqvarna	Redi Lock	JOY-HQS series
HTC	HTC plate	JOY-HTCS series
Klindex	Quick Lock	JOY-KLD series
Scanmaskin	Scanmaskin plate	JOY-SCS series
STI PrepMaster	Pin or E/Z plug	JOY-SPS series
Terrco	Plug	JOY-TCS series
WerkMaster	WerkMaster plate	JOY-WMS series
Lavina	Quick Change	JOY-LVS series
Diamatic	M6 or 9 mm, Diamatic spacing	JOY-TP-B2

If your fleet mixes brands — common in Brazilian contractors that buy used grinders from different suppliers — the practical answer is to standardise on one universal head where you can, and keep platform-specific plates only for the machines that need them.

Step 2 — Specify the Segment for the Slab

Grit and bond are set by the concrete, not by preference. A block that glazes on a 40 MPa industrial slab is the wrong bond, and a 6# block on a 20 MPa screed leaves gouges you will spend three passes removing.

Floor condition	Start with	Bond	Why
Hard, dense slab (high fck, granite / quartz aggregate)	30/40	Soft	Keeps diamond exposed; resists glazing
Standard industrial or commercial floor	30/40	Medium	Default specification for most Brazilian jobs
Soft or sandy screed, abrasive aggregate	30/40	Hard	Slower bond wear, longer block life
Coating or adhesive residue	16# or 6#	Medium	Removes residue before a 30/40 pass
Floor going to resin polish	30/40 → 60/80 → 100/120	Medium	Leaves a finish the transitional pads can close

Ask for the segment height and the segment size in millimetres in the quotation — a 12 mm segment and a 10 mm segment look identical in a photo but deliver very different tool life.

Step 3 — Size the Order for Your Fleet

Count blocks per head first: most single-head grinders take three or four, twin-head machines take six to eight. Then add one spare set per machine, because a set that dies mid-shift costs more in downtime than the spare blocks. Order in sets rather than single pieces — mixing new and half-worn blocks on one head leaves the floor wavy and shortens the life of the new ones.

To estimate consumption for your own floor, run a measured test area of 100–200 m² with a new set, record the segment height before and after, and calculate metres per millimetre of wear. That number, not a catalogue claim, is what belongs in your budget.

Step 4 — Inspect on Arrival

• Measure the plate — hole diameter, spacing and thickness against the drawing you approved.
• Check the thread — an M6 bolt must thread cleanly; a cross-threaded plate is scrap.
• Check the segment weld or braze — segments must sit flat with no gap; a lifted segment throws diamond on the first pass.
• Weigh a sample — blocks from the same batch should be within a few grams of each other.
• Run 10 m² on a known slab — confirms bond and grit before the rest of the order goes to site.

Step 5 — Paperwork and Logistics

For any import into Brazil, the commercial invoice, packing list and the product description must match what is actually shipped: platform, block model, segment size, grit and bond. A vague description such as "diamond tools" creates classification doubt at customs, and a mismatched packing list is the fastest way to hold a shipment. Confirm the fiscal classification with your despachante before the goods leave, and keep the approved specification sheet attached to the order so the reference exists on both sides.

FAQ

Can one block series cover several machines?

Yes, if the connection is the universal three-hole plate. That is the reason most Brazilian contractors standardise on M6 or 9 mm trapezoid blocks and keep only a few platform-specific plates.

Should I buy mixed grits in one order?

Buy the grits your sequence needs — usually 30/40, 60/80 and 100/120 — plus 16# or 6# only if you strip coatings. Supplying every grit in equal quantity leaves you short of the ones you actually run.

What if the sample block does not fit?

Send the measurement photo before production starts, not after. Specification errors are cheap to fix at quotation stage and expensive after the goods are on the water.

Get a Specification Confirmed Before You Order

Send the machine photo, the slab description and the grit range, and we will return a written specification with plate, segment size, grit and bond for each machine in your fleet. Start from the diamond grinding range, or read how to choose bond and grit.