drum roasters
portuguese cast-iron drum roasters built for decades of service.
sintra, portugalfounded 1979visit joper
Joper has been building cast iron drum roasters in Sintra, Portugal since 1979. their machines are hand-built using traditional materials: cast iron drums, cast iron bearing supports, and carbon steel construction. the cast iron approach gives thermal mass and even heat distribution, similar to older Probat designs but at a different price point. they manufacture manual control machines across a range of sizes, from 5kg shop roasters up to 120kg production models. the brand is less common outside Europe but has a solid reputation for durability and mechanical longevity. buyers tend to be roasters who want old-school thermal behavior and don't need advanced automation. natural gas is the standard heat source across the line. these are straightforward machines: mechanical controls, modulating burners, air-cooled systems. if you want cast iron construction without paying German prices and you're comfortable with manual roasting, Joper is worth considering. they're not flashy, but they're built to run for decades. expect longer heat-up times than steel drum machines and plan for three-phase power.
the cast iron construction. Joper uses cast iron for both the drum and the main bearing supports, which is rare at this price level. cast iron has high thermal mass and retains heat longer than steel, giving you more stable temperatures through the roast and better recovery between batches. the trade-off is weight: these machines are heavy and take longer to heat up. they also cost more to build and ship than steel drum equivalents. if you want the thermal characteristics of vintage European roasters with manual control, that's the Joper approach.
the smaller models (5kg, 15kg) are shop roasters, not production machines. the 30kg can handle medium production if you're doing back-to-back batches, but you're still working with manual controls. Joper makes larger models (60kg, 120kg) that are built for real production volume, but those aren't in our current listings. if you need automated profiling or want to hit 500kg per day with minimal labor, you'll want something else. these machines suit roasters who have the skill to dial in manually and prefer hands-on control.
standard drum roaster maintenance: clean the drum and chaff collector regularly, check burner operation, lubricate bearings and gearboxes. the cast iron construction is durable but you need to watch for wear on mechanical linkages and keep gas fittings tight. parts availability outside Portugal can be slower than with US or German brands. the simpler mechanical design means less can break compared to heavily automated machines, but when something does need replacement, plan for international shipping times. regular bearing maintenance matters because of the drum weight.
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