Protect the timber before the crack spreads.

Galvanized steel anti-crack connectors for logs, beams, planks and sleepers. Made in our own factory, with guidance to choose the right size.

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Stacked logs with galvanized anti-crack connectors applied at the ends

In-house productionGalvanized steelDirect serviceSizing guidanceShipping across BrazilExport

Practical benefits

Why use JMB connectors?

Timber moves as it dries. Pressed into the end of the piece, the connector holds the fibers and helps stop cracks from spreading.

Aligns and stabilizes the timber

Helps keep the piece firm while it dries, is handled or remains in storage.

Reduces warping

Restraint at the ends reduces splitting and movement in the timber.

Increases durability

With fewer cracks, the piece keeps its structure and can be used for longer.

Helps prevent cracks and breaks

The connector holds the end and reduces the chance of a crack compromising the piece.

Product lines

Choose by timber type and size

We make square, round, plank and sleeper models. Check the applications and sizes, or send us a photo for a recommendation.

JMB-QDR

Square Anti-Crack

For timber in a range of sizes: beams, sawn blocks and squared pieces. Applied at the ends to help contain splitting.

Shape: Square and rectangular plates with dense teeth
Material: Galvanized steel
Shipping: Boxes, sacks or drums
Application: Timber in a range of sizes
Size range: 4 × 4 a 14 × 24 cmCheck the size with our sales team.

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JMB-RED

Round Anti-Crack

For round logs in a range of sizes, from eucalyptus and pine to hardwoods. Helps contain cracking from the center of the end.

Shape: Round plate with dense teeth
Material: Galvanized steel
Shipping: Boxes, sacks or drums
Application: Timber in a range of sizes
Size range: Ø 65 a Ø 200 mmCheck the size with our sales team.

View details Request a quote

JMB-PRA

Anti-Crack for Planks

Long strip for planks, solid tops and wide pieces. Spans the full width of the end.

Shape: Long strip with staggered teeth
Material: Galvanized steel
Shipping: Boxes, sacks or drums
Application: Wide pieces in a range of sizes
Size range: 1,8 × 10 a 2,5 × 28 cmCheck the size with our sales team.

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JMB-DOR

Anti-Crack for Sleepers

Helps reduce splitting and cracking in railroad sleepers and dense, large-section timber. It can also support the reuse of old sleepers.

Shape: Rectangular plate with dense teeth
Material: Galvanized steel
Shipping: Boxes, sacks or drums
Application: Sleepers in general
Size range: VariousCheck the size with our sales team.

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Check the appropriate size in each product line table. Minimum order of R$ 1.000,00.

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Why choose JMB

Direct sales support from the factory

If you need a special size, send the dimensions and quantity. Payment and freight are also agreed with sales before production.

Custom sizes

Need a size outside the catalog? Send the dimensions and quantity so we can assess production.

Flexible payment terms

Payment terms are agreed with sales according to the order value.

Negotiable freight

We quote shipping according to volume and delivery city.

Sealed-box orders

The connectors leave the factory packed in sealed boxes. Minimum order: R$ 1.000,00.

Minimum order of R$ 1.000,00. Freight and payment terms arranged with sales.

How to order

What we need to prepare your quote

Timber and size

Tell us the species, end measurement and quantity. If you prefer, send a photo.

Connector selection

If you do not know the model, we will check the details and recommend an option.

Price and lead time

You receive the price, production lead time and freight terms.

Production and shipping

We manufacture in Morro da Fumaça and ship the order in sealed boxes.

About JMB

Experience and in-house manufacturing

JMB is a family business that has manufactured anti-crack connectors in Morro da Fumaça, Santa Catarina, Brazil, since 2007. We make models for logs, beams, planks and sleepers.

We sell to companies in Brazil and abroad. Sizes, quantity, lead time, payment and freight are handled directly with our team.

From the raw material to the finish, every connector goes through quality control during manufacturing, and that is what keeps pieces consistent batch after batch.

Logs with anti-crack connectors applied, ready for shipping in the JMB yard

See how JMB products are made

Customers

What our customers say

“JMB has been a partner of MR Madeiras for many years, serving us with quality and speed. The JMB anti-crack connector boosts the durability of our eucalyptus and is a strong ally against cracking, guaranteeing even more quality for our product.”
MR Madeiras
Partner

“Always excellent in product quality and service. We can only thank the JMB team for the professionalism that has made the difference for our company for years!”
MTA Madeiras
Customer

Request a quote

Send the timber size, quantity and delivery city through the form or WhatsApp. If you do not know the model, we will help you choose.

Contact channels

Sales support: +55 (48) 99120-6079
Finance: +55 (48) 99149-1536
Billing / HR: +55 (48) 3439-4217

Hours

Monday to Friday: 7:45 AM to 5:45 PM
Saturday and Sunday: Closed

Factory

Rodovia Municipal MOF-170, nº 1305, Km 1,30, Barracão
Morro da Fumaça, SC · CEP 88830-000

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Have this information ready▾

Timber species (eucalyptus, pine, hardwood...)
End measurement or piece diameter
Estimated volume per month or per batch
Delivery city, to calculate freight

Minimum order of R$ 1.000,00, shipped in a sealed box.