Jet JBOS-5-M Oscillating Spindle Sander
The Jet JBOS-5-M is a benchtop oscillating spindle sander designed for woodworking applications. It features a powerful 0.7kW (1/2 HP) induction motor that efficiently handles a wide range of sanding projects. The machine is primarily used for finishing curved edges and contours in woodworking projects, where traditional flat sanders would be ineffective.
The JBOS-5-M is characterized by its 25mm (1 inch) oscillating action, which moves the sanding spindle up and down during rotation. This oscillating motion serves two important functions: it reduces friction heat to protect the wood from burning, and it extends the life of the sanding sleeves by distributing wear across the entire sleeve rather than concentrating it in one area.
A key feature of the JBOS-5-M is its large cast iron worktable, which provides a stable surface for workpieces and can be tilted up to 45 degrees for sanding angled surfaces. This versatility makes it suitable for a variety of woodworking tasks, from simple edge sanding to more complex contoured work.
The JBOS-5-M is equipped with a 50mm (2-inch) dust collection port, which when connected to an appropriate dust extractor, provides efficient dust removal during sanding operations. This feature is particularly important for maintaining a clean workspace and protecting the operator from harmful wood dust.
The sander comes standard with five different sized spindles (6mm, 12mm, 16mm, 38mm, and 50mm) with corresponding 100-grit sanding sleeves, allowing users to work on a wide range of curve sizes and project dimensions. An optional 76mm diameter spindle is available separately for larger sanding applications.
This model is manufactured by Jet Tools, a company known for producing high-quality woodworking machinery. The JBOS-5-M is marketed toward both professional woodworkers and serious hobbyists who require precision and reliability in their sanding operations, particularly for projects involving curved or contoured surfaces where traditional sanders would be inadequate.
Design and Specifications
The Jet JBOS-5-M features a robust design with a cast iron table that provides stability during operation. The machine has overall dimensions of 768 mm × 610 mm × 305 mm (approximately 30" × 24" × 12"), making it compact enough for workshop benchtop use while still providing adequate workspace. The unit weighs approximately 25 kg (55 lbs), which helps reduce vibration during operation.
The worktable measures 14-1/2" × 14-1/2" (368 mm × 368 mm) and is made of gray cast iron, providing a durable, flat surface for precise grinding of workpieces. A key design feature is the table's ability to tilt up to 45 degrees, allowing operators to sand at various angles for specialized applications.
The machine includes built-in storage racks that keep spindles and table inserts handy, and four non-skid rubber feet to keep the machine stable during use. The JBOS-5-M also features four table inserts (two oblong and two round in 3/4" and 1" sizes) that fit around the spindles to prevent dust and debris from falling into the motor housing.
Technical Specifications
The JBOS-5-M is powered by a 0.7kW (1/2 HP) induction motor operating at 230V/240V (European model) or 115V (North American model) with 3 amps drawn. The motor drives the spindle at a speed of 1,725 RPM, providing consistent power for sanding operations.
The oscillation mechanism produces 30 oscillations per minute with a 25mm (1 inch) stroke length. This oscillating action is driven by a heavy-duty worm and gear mechanism that runs in a sealed lubricated box to prolong service life. The main spindle support runs on precision ball bearings for smooth operation and consistent performance.
The machine includes a 50mm (2-inch) dust port located at the rear, designed to connect to a dust extraction system. When used with an appropriate extractor, the dust collection system operates efficiently to maintain a clean working environment and protect both the machine and the operator from dust accumulation.
Spindle System
The JBOS-5-M comes standard with five spindle assemblies of different diameters: 6mm (1/4"), 12mm (1/2"), 16mm (5/8"), 38mm (1-1/2"), and 50mm (2"). Each spindle features a threaded end for quick and easy changes. These spindles are supplied with 100-grit sanding sleeves, but replacement sleeves are available in 60, 100, and 150 grit options.
An optional 76mm (3-inch) diameter spindle can be purchased separately, which requires an accompanying table insert for proper installation and use. This larger spindle extends the machine's versatility for working with broader curves and larger workpieces.
The spindle design allows for quick changing of sanding sleeves, which can be easily flipped over to use both sides, effectively doubling the life of each sleeve. This feature, combined with the oscillating action, makes the JBOS-5-M an economical option for woodworkers who regularly sand curved surfaces.