CHINELATTO

BVC-90

BVC-90 Cylinder Boring Machine Chinelatto Portable Dual Speed

Q: What is a cylinder boring machine used for and when to use it?

A cylinder boring machine is used for precise boring of engine cylinders, correcting out-of-roundness, scratches and internal wear. It's used when the cylinder is out of specification or has defects that prevent proper piston operation. The BVC-90 works with cylinders from 2.08-3.54 inches (Ø53-90mm), ideal for motorcycle engines, compressors and ice cream machines. It's the first step before honing, preparing the cylinder to receive the piston with correct clearance.

Q: What is the capacity and specifications of the BVC-90 boring machine?

The BVC-90 Chinelatto has capacity to machine cylinders from 2.08-3.54 inches (Ø53-90mm), with maximum depth of 9.6 inches (245mm). Operates at dual speed 345-420 rpm, with cutting feed of 1.38-1.65 IPM (35-42 mm/min). 0.75hp motor, 220V three-phase, weight 276 lb (125kg). Cuts up to 0.04 inches (1mm) in diameter per pass. Includes motorcycle cylinder fixture table, 0.31x1.18 inch (Ø8x30mm) tools, centering pin sets for different diameters and manual lubrication system.

Q: What type of engine and cylinder can I bore in this machine?

The BVC-90 bores cylinders from 2.08 inches to 3.54 inches (53-90mm) diameter, perfect for motorcycle engines (125cc to 600cc), refrigerator compressors, ice cream machines and small industrial engines. Not suitable for car engines (too large) or very small trimmer engines. The motorcycle-specific table facilitates fixation. With 9.6 inches (245mm) depth, it handles most cylinders in this diameter range, including 2-stroke and 4-stroke engines.

Q: What's the difference between portable and fixed boring machines for cylinders?

The portable boring machine like the BVC-90 is more versatile and takes less shop space, allowing cylinder work in different positions. The fixed type offers greater rigidity and precision for higher production. Portable is ideal for smaller machine shops doing varied cylinders (motorcycles, compressors), as you adjust the machine to the part. Fixed requires bringing the part to it, limiting work type but offering higher productivity in batches.

Q: How does the cylinder boring process work?

Boring removes cylinder material with a rotating cutting tool, restoring correct geometry. First, center the cylinder with centering pins, adjust depth and speed according to material. The BVC-90 rotates the tool (345-420 rpm) while automatically advancing at 1.38-1.65 IPM (35-42 mm/min), making precise cuts. The lubrication system reduces heat and improves finish. After boring, the cylinder goes to honing to achieve proper final surface roughness.

Q: What's the maintenance and lifespan of this cylinder boring machine?

With proper maintenance, the BVC-90 lasts over 15 years in commercial use. Maintenance includes: daily cleaning after use, weekly lubrication of grease points, monthly alignment checking and regular tool sharpening on included diamond wheel. The 0.75hp motor is robust and rarely fails. Chinelatto offers replacement parts and technical support. Cutting tools are the main consumable - lasting about 50-80 cylinders depending on usage.

BVC-90 Cylinder Boring Machine Chinelatto Portable Dual Speed

BVC-90

BVC-90 Cylinder Boring Machine Chinelatto Portable Dual Speed

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MANUFACTURER

Manufacturer 🇧🇷 CHINELATTO

Model BVC-90

Category Heavy-Duty Cylinder Boring Machine

Description

Portable boring machine for precise cylinder boring Ø2.1-3.5 inches (53-90MM) with dual speed (345-420 rpm) and motorcycle table. 1HP motor, 9.6 inch (245MM) depth, ideal for engine rebuild shops

Technical Specifications

BVC130-B022

Tool (lenght 30 x diam. 8 mm)

CAPACITY

Capacity to boring cylinders - diameters min ~ max	Ø 2,087" ~ 3,543"
02 Speed tool	345 - 420 rpm
Advancement of cutting around the tool	0,0035"
02 Speed advance cutting	1.3/8" - 1.5/8" / min
Capacity to cut in diameter - maximum	0,0393"
Maximum Height cylinder	9.5/8"
Transmission of rotation of the tool	transmission bevel gear
Electric Motor	0.559 kw
Disarmament automatic in depth	normal
Table to fixing of cylinders of motorcycle	normal
Grindstone and devices to sharpening tool	normal

ELECTRIC POWER

Normal electric power	220 volts - 60hz - 3 ph
Motor power	0.559 kw

DIMENSIONS - WEIGHT

Maritime packing (Length x Width x Height)	27" x 23" x 63"
Net - Gross Approx. weight	276 lb / 430 lb

STANDARD ACCESSORIES

02 Cylinder Boring Tools Ø 5/16" x 1.3/16"
04 Tools Support
02 de Ø 3/4" x 1.15/32"
02 de Ø 3/4" x 1.3/4"
01 Micrometer (mm) for measure tools
01 Pattern for micrometer Ø 1.1/8" x 2" x 3/4"
01 Device sharpen tool in degree
Diamond wheel for sharpening tools Ø 3" x Ø 1/2" x 1/16"
01 Manual pump oil
04 Tools: 02 Allen Tools: 3/16" - 3/32" - 02 Fixe Tools 15/32"
05 Set of centering pins, temperate
03 piece - for cylinder boring Ø 2.1/16" - 2.7/16"
03 piece - for cylinder boring Ø 2.3/8" - 2.3/4"
03 piece - for cylinder boring Ø 2.3/4" - 3.1/16"
03 piece - for cylinder boring Ø 3.1/32" - 3.3/8"
03 piece - for cylinder boring Ø 3.3/8" - 3.3/4"
01 Axis limiter
01 Lock axis limiter

OPTIONAL ACCESSORIES

Extra Tools
Technicals specifications subjected to change.

Specifications subject to change without notice. Some capacities listed may require optional accessories. Confirm exact dimensions during quotation.

Frequently Asked Questions

▸ What is a cylinder boring machine used for and when to use it?

A cylinder boring machine is used for precise boring of engine cylinders, correcting out-of-roundness, scratches and internal wear. It's used when the cylinder is out of specification or has defects that prevent proper piston operation. The BVC-90 works with cylinders from 2.08-3.54 inches (Ø53-90mm), ideal for motorcycle engines, compressors and ice cream machines. It's the first step before honing, preparing the cylinder to receive the piston with correct clearance.

▸ What is the capacity and specifications of the BVC-90 boring machine?

The BVC-90 Chinelatto has capacity to machine cylinders from 2.08-3.54 inches (Ø53-90mm), with maximum depth of 9.6 inches (245mm). Operates at dual speed 345-420 rpm, with cutting feed of 1.38-1.65 IPM (35-42 mm/min). 0.75hp motor, 220V three-phase, weight 276 lb (125kg). Cuts up to 0.04 inches (1mm) in diameter per pass. Includes motorcycle cylinder fixture table, 0.31x1.18 inch (Ø8x30mm) tools, centering pin sets for different diameters and manual lubrication system.

▸ What type of engine and cylinder can I bore in this machine?

The BVC-90 bores cylinders from 2.08 inches to 3.54 inches (53-90mm) diameter, perfect for motorcycle engines (125cc to 600cc), refrigerator compressors, ice cream machines and small industrial engines. Not suitable for car engines (too large) or very small trimmer engines. The motorcycle-specific table facilitates fixation. With 9.6 inches (245mm) depth, it handles most cylinders in this diameter range, including 2-stroke and 4-stroke engines.

▸ What's the difference between portable and fixed boring machines for cylinders?

The portable boring machine like the BVC-90 is more versatile and takes less shop space, allowing cylinder work in different positions. The fixed type offers greater rigidity and precision for higher production. Portable is ideal for smaller machine shops doing varied cylinders (motorcycles, compressors), as you adjust the machine to the part. Fixed requires bringing the part to it, limiting work type but offering higher productivity in batches.

▸ How does the cylinder boring process work?

Boring removes cylinder material with a rotating cutting tool, restoring correct geometry. First, center the cylinder with centering pins, adjust depth and speed according to material. The BVC-90 rotates the tool (345-420 rpm) while automatically advancing at 1.38-1.65 IPM (35-42 mm/min), making precise cuts. The lubrication system reduces heat and improves finish. After boring, the cylinder goes to honing to achieve proper final surface roughness.

▸ What's the maintenance and lifespan of this cylinder boring machine?

With proper maintenance, the BVC-90 lasts over 15 years in commercial use. Maintenance includes: daily cleaning after use, weekly lubrication of grease points, monthly alignment checking and regular tool sharpening on included diamond wheel. The 0.75hp motor is robust and rarely fails. Chinelatto offers replacement parts and technical support. Cutting tools are the main consumable - lasting about 50-80 cylinders depending on usage.