In the industrial market for components used in securing bearings with tapered bores, BGL produces adapter and withdrawal (hydraulic) sleeves, Lock Nuts, Precision Nuts, Inch lock Nuts and Lock Washers. Additionally, BGL manufactures tools, including Hook Spanners, Hydraulic Nuts HMV, Hydraulic Pumps and Extension tubes. The company is also capable of producing custom parts according to customer’s specification and providing machining services for third parties.

Market performance

The quality of the BGL's products is present in various industrial sectors: agricultural machinery and equipments, paper and pulp, mining, mills, oil drilling, textile machinery, industrial conveyors, dryers and fans. These are only some of them.

Agricultural Machinery
Industrial Conveyors
Wind generator
Oil Drilling


Taking as philosophy the quality and continuous improvement, all products are manufactured in accordance with the International Standards ISO and DIN, what ensures accuracy and full standardization of parts.

Vertical and 100 % Internal Manufacturing

One of the characteristics that makes the BGL differentiated is the vertical production. Dominating all transformation technology, from the raw material to the finished part.
The raw material used to produce parts has great mechanical properties and comes from qualified suppliers, having adequate mechanical resistance and dimensional precision.
They are controlled from their commissioning in the factory until the identification of the batch number on the part.

The material technology developed by the company has as base the nodular, alloy BGFN01 and 02, proven to be more adequate. Even also parts are produced with rolled steel according to the customer requirements.

Comparison of bearing bushing material (international, nodular and steel standards)

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BGL - Bertoloto & Grotta Ltda. | Sleeves for Bearings.
Av. Major José Levy Sobrinho, 1296 | Boa Vista
13486.190 | Limeira-SP | Brasil
+55 (19) 3451.8210 | +55 (19) 99392.2793 | info@bgl.com.br

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Sphera development