Description
BROOKFIELD SC4-13RPY
Technical Specifications Brand: Brookfield Model: SC4-13RPY Spindle Type: Cylindrical immersion spindle for small sample adapter Sample Volume Requirement: 2 mL to 10 mL matching SC series sample chamber Shaft Material: Stainless steel Measuring Range: Defined by rotational speed and sample viscosity Connection Interface: Standard Brookfield spindle coupling Operating Temperature: -20°C to +100°C Surface Finish: Polished smooth surface for consistent fluid shear
Functional Features Generates uniform shear field within small sample chamber during rotation. Matches the inner contour of Brookfield small sample adapter to eliminate edge turbulence. Transmits torque from viscometer head to the test liquid for viscosity calculation. Polished surface prevents adhesion of high-viscosity samples after measurement. Compatible with Brookfield water bath temperature control jacket for isothermal testing. Simple coupling mounting enables fast spindle replacement between different samples.
Application Scenarios Laboratory viscosity test of cosmetic raw materials, paint and coating formulation analysis, solvent and resin viscosity measurement, pharmaceutical liquid sample characterization, food additive fluid property inspection.
Performance Parameters Consistent shear geometry for repeatable viscosity readings. Smooth rotation without eccentric wobble during measurement. Resists corrosion from mild organic solvents and aqueous solutions. Maintains dimensional stability under temperature cycling in thermal bath. Low surface roughness reduces sample retention after cleaning.
Material Composition Main Measuring Body: 316 stainless steel. Upper Connecting Shaft: 304 stainless steel. Surface Treatment: Electropolishing. Coupling Head: Stainless steel with precision machined thread and notch.
Structural Features Precision machined thin-wall cylindrical measuring cylinder. Long slender upper shaft connects the cylinder body to viscometer coupling. Precision machined notch on coupling end locks onto Brookfield viscometer drive head. Uniform wall thickness ensures stable mass distribution and balanced rotation. Smooth bottom edge eliminates local flow disturbance inside sample chamber.
Working Principle The viscometer drive head rotates the SC4-13RPY spindle at a set constant speed. The liquid sample confined in the small sample chamber creates viscous drag torque acting on the cylinder surface. The viscometer detects torque magnitude, converts torque value into dynamic viscosity based on spindle geometry and rotating speed. Temperature control jacket stabilizes sample temperature to remove temperature influence on fluid viscosity.
Installation Requirements Mount spindle to Brookfield viscometer coupling, align notch and lock the connection gently. Insert spindle vertically into pre-temperature-controlled small sample chamber. Adjust viscometer height until liquid level reaches the marked line on spindle. Check vertical alignment to avoid spindle contact with chamber inner wall. Select appropriate rotational speed according to expected sample viscosity.
Usage Notes Avoid scratching polished cylinder surface, scratches distort shear field and cause measurement error. Clean spindle immediately after test with matched solvent to prevent sample curing or residue buildup. Do not apply lateral force on spindle shaft, bending causes eccentric rotation. Inspect shaft for bending or corrosion before each measurement. Keep spindle vertically stored when not in use.
