Portable Cylinder Boring Machine BCM-80 - 1.8-3.1 inches

Boring is used to machine engine cylinders that have scratches, out-of-roundness, or excessive wear. The operation removes material from the cylinder's inner wall, creating a smooth surface with uniform diameter. This allows installing oversized repair pistons and restoring engine compression. It's essential in machine shops working with automotive block reconditioning, especially when the cylinder cannot be simply honed.

The BCM-80 boring machine works with cylinders from Ø1.8 to Ø3.1 inches (Ø46 to Ø80mm), covering most domestic and imported car engines. It has maximum cutting capacity of 0.02 inches (0.5mm) on diameter, working depth up to 6.3 inches (160mm), and rotation of 486 rpm. With belt transmission, it offers smooth and precise machining. Weighs approximately 176 lb (80kg) and includes integrated tool sharpener with grinding stone, eliminating need for additional equipment for boring bar maintenance.

This range handles practically all passenger cars and light utility vehicles. Includes 1.0, 1.4, 1.6, 1.8, 2.0, and many 2.4 engines from most manufacturers (Volkswagen, Fiat, GM, Ford, Honda, Toyota, etc). Also works for larger displacement motorcycles. The capacity from Ø1.8 to Ø3.1 inches (Ø46 to Ø80mm) covers from small cylinders to V6 blocks and some compact V8s, making the machine versatile for shops serving various vehicle types.

The portable BCM-80 boring machine is more versatile, as it can work with the block in horizontal or vertical position, taking less shop space. The bench type is generally more rigid and may have higher precision, but requires the block to be positioned specifically. The portable facilitates work on heavy blocks (V8, diesel) that are difficult to handle, while the bench type is better for series production with lightweight blocks.

The process uses a boring bar with cutting inserts that rotates at 486 rpm and slowly advances through the cylinder. The machine removes material in successive passes, typically 0.004 to 0.008 inches (0.1 to 0.2mm) at a time, until reaching final dimension. Belt transmission ensures uniform rotation and reduces vibration. The integrated sharpener keeps tools always sharp. It's important to use cutting fluid and measure frequently to ensure proper cylindricity and surface finish.

Imported boring machines like the BCM-80 have good durability when properly maintained, potentially working for decades. Basic maintenance includes regular bearing lubrication, belt transmission adjustment, and cleaning after use. The integrated sharpener facilitates tool maintenance. It's important to use original replacement parts and perform periodic overhauls. At 176 lb (80kg), it's a robust machine that withstands intensive use in commercial shops, provided it's operated correctly.

The BCM-80 is quoted on demand, and pricing varies with each customer's needs, including accessories, tooling and optional features. With in-house technology developed by Chinelatto in Brazil since 1962, you can count on responsive support from our technical team. Spare parts: many are kept in stock and the others are manufactured within a reasonable lead time. Request a quote at chinelatto.com.br/contact — our sales team will contact you very soon.