55cc mid-range gas chain saw for firewood cutting

The mid-range workhorse that keeps your inventory moving

Distributors and dealers serving the homeowner and semi-professional market need a chainsaw that hits a precise performance-to-price threshold: enough power for consistent firewood cutting, durable enough to minimize warranty returns, and ergonomic enough that first-time buyers can use it confidently. BISON BS5800 is engineered for exactly that position.

Engine performance matched to the task

BS5800 is powered by a 54.6cc, 2-stroke, single-cylinder, air-cooled engine producing 2.6 kW of rated power — the recognized sweet spot for medium-duty firewood processing and storm debris cleanup. Idle speed holds stable at 3,000 ±300 RPM, delivering predictable behavior during repeated start-stop cycles without stalling — a common complaint with lower-spec alternatives in this category.

Unlike 40–50cc consumer-grade saws, the BS5800 maintains cutting torque under load through dense hardwoods, reducing job interruptions and operator frustration.

20-inch bar for versatile, efficient cuts

The 20-inch (505mm) guide bar with a 480mm effective cutting length accommodates logs up to 38cm in diameter — covering the majority of firewood and timber bucking scenarios your end-users will face. The 0.325" pitch, 0.058" gauge, 76-link chain provides an optimal balance of cutting speed and durability, with a chip-clearing geometry that extends chain life in continuous use.

Automatic bar-and-chain oiling ensures consistent lubrication without manual intervention, reducing chain wear and operator downtime.

Designed for sustained use, not just the showroom

• Fuel tank: 550 ml — Fewer refueling stops per session; higher productivity

• Chain oil tank: 260 ml — Proportional to fuel tank — top up once, not twice

• Fuel mix ratio: 25:1 — Standard ratio; compatible with widely available pre-mix fuels

• Bar length: 20" / 480mm cutting — Versatile for firewood bucking through to light tree felling

The tank sizing ratio (fuel:oil = ~2:1) is deliberately matched so both reservoirs deplete at similar rates — a practical detail that reduces user error and after-service calls.

Built to reduce returns, protect your reputation

BS5800 features a reinforced crankcase and heavy-duty air filtration system engineered for dusty, high-debris outdoor environments. An integrated chain brake provides compliant safety performance for markets requiring operator-safety standards.

Anti-vibration handle mounts reduce fatigue during extended cutting sessions, a measurable factor in user satisfaction and repeat purchase intent among homeowner buyers.

OEM/ODM ready — your label, our engineering

BISON supports full OEM/ODM customization:

• Private label branding on bar covers, body panels, and packaging

• Parameter adjustments (bar length, chain pitch, tank sizing) for regional market requirements

• CE-compliant build available for EU market distribution

• Minimum order quantities and lead times available on reques

Contact our export team to discuss MOQ, lead times, and customization options.

BS5800 specification

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