The Beckman J6-B high-capacity centrifuge has an extensive feature list, including a traditional brushed motor and a reliable analog display. This Beckman model also features advanced cooling options, a performance speed of 6,000 rpm, and a maximum power of 6,835 grams.
Specification
Condition: certified pre-owned Maximum Speed: 6000 rpm Maximum Speed: Any speed outside the rotor’s critical speed range (~600 to 800rpm). Critical speed is the speed at which a rotor shifts from rotation about its center of mass. Critical Speed is characterized by some vibration. Maxium RCF: 6840 x g Maximum Rotor Capacity: 6 liters Driver System: 1.2 kW (1 ½ hp) dc motor; belt-driven driveshaft. Speed Control: Rotor Speed meter reading is within 50 rpm of setting on Speed dial, and within 150 rpm of actual rotor speed. Control rage is 0 to 6000 rpm. Acceleration Time: Minimum 15 seconds (JA-21 rotor), maximum 2.5 minutes (JS-4.2 rotor). Braking System: Electronic, variable braking Maximum Braking Time: At maximum brake setting: no more than twice the acceleration time. Temperature Control: Sample temperature is within 2°C of the desired temperature; within 1° if calibration has also been performed. Temperature Control Range: 0 to 40°C at full speed; as low as -25°C at reduced speed Ambient Range: 16°C to 38°C (60°F to 100°F) Maximum Heat Output (During Operation): 1.9 kW (6500 Btu/h) Timer: Times up to 30 minutes (60 Hz instruments) or 36 minutes (50 Hz instruments), or HOLD; graduated in 1-minute increments Rotor Chamber Diameter: 580 mm (23”)
Electrical Requirements: 3-wire single phase Range for 208V/60Hz 187-223 V Range for 240V/60Hz 224-264 V Range for 220V/50Hz 210-224 V
Dimensions: Right side (for tilting up door): 150mm (6”) Left side:150mm (6”) Back( distance from condenser fins to wall, essential for adequate ventilation):150 mm (6”) Net weight: 252kg (555 lbs) Height to door top(door closed): 940mm (37”). Height to work surface(door open): 910mm (35.5”) Overall height: 1270mm(50”) Overall width: 711mm (28”) Overall depth(without bracker): 825mm (32.5”) Height with door open (left side): 1600mm(63”)
Features
Conventional brush motor Analog displays and controls Advanced refrigeration capability