B R O O K F I E L D E N G I N E E R I N G L A B O R AT O R I E S , I N C .
11 Commerce Boulevard • Middleboro, MA 02346 USA
ISO9001 CERTIFIED
Vane Spindles
Assembly & Operating Instructions
TEL 508-946-6200 or 800-628-8139 F AX 5 0 8 - 9 4 6 - 6 2 6 2
Boston • Chicago • London • Stuttgart • Dresden • Guangzhou
www.brookfieldengineering.com
Vane spindles can be used with any standard Brookfield Viscometer/Rheometer. V-71, V-72, and V-73 are supplied
in the Vane Spindle Set (Part No. SSVANE). The V-74 and V-75 spindles are optional extras. The small size
of the V-74 vane spindle is ideal for testing small sample sizes and fitting into sample containers with small
openings. However, limited surface area for spindle measurement geometry may make it more challenging to
obtain repeatable shear stress and viscosity values.
Vane Spindle Set:
includes 3 vane spindles
and storage case.
Part No. SSVANE
(empty slot)
Vane
Primary Immersion Mark
Spindle
Choose the immersion mark which best suits
the size of container for your sample material.
Secondary Immersion Mark
Table 1 - Vane Spindle Dimensions
Vane Length Vane Diameter
Spindle inches cm inches cm
V-71 2.708 6.878 1.354 3.439
V-72 1.708 4.338 .853 2.167
V-73 .998 2.535 .499 1.267
V-74 .463 1.176 .232 .589
V-75 .632 1.61 .316 .803
Note: Sample container diameter should be at least twice (2x) the vane
diameter when possible. Sample container depth should provide
clearance, at the bottom, greater than or equal to vane spindle
diameter when possible.
Spindle Range Data
Table 2 - Spindle Range Data
Spindle Torque Shear Stress Range Viscosity Range cP
Range Pa dyne/cm 2 (mPa•s) @ 10 rpm
V-71 NOT RECOMMENDED FOR USE ON LV TORQUE
V-72 LV .188-1.88 1.88-18.8 104.04 - 1040
V-73 LV .938-9.38 9.38-93.8 502 - 502000
V-74 LV 9.38-93.8 93.8-938 5.09 - 50900
V-75 LV 3.75-37.5 37.5-375 1996 - 19960
V-71 RV .5-5 5-50 262 - 2620
V-72 RV 2-20 20-200 1110 - 11100
V-73 RV 10-100 100-1000 5350 - 53500
V-74 RV 100-1000 1000-10000 54300 - 543000
V-75 RV 40-400 400-4000 21300 - 213000
V-71 HA 1-10 10-100 524 - 5240
V-72 HA 4-40 40-400 2220 - 22200
V-73 HA 20-200 200-2000 10700 - 107000
V-74 HA 200-2000 2000-20000 108600 - 1086000
V-75 HA 80-800 800-8000 42600 - 426000
V-71 HB 4-40 40-400 2096 - 20960
V-72 HB 16-160 160-1600 8880 - 88800
V-73 HB 80-800 800-8000 42800 - 428000
V-74 HB 800-8000 8000-80000 434400 - 4344000
V-75 HB 320-3200 3200-32000 170400 - 1704000
V-71 5XHB 20-200 200-2000 10480 - 104800
V-72 5XHB 80-800 800-8000 44400 - 444000
V-73 5XHB 400-4000 4000-40000 214000 - 2140000
V-74 5XHB 4000-40000 40000-400000 2172000 - 21720000
V-75 5XHB 1600-16000 16000-160000 852000 - 8520000
Notes: 1) 1 Pa = 10 dyne/cm2 2) 1cP = 1 mPa•s 3) Possibility of turbulence at speeds above 10 rpm may give artificially
higher viscosity readings 4) 5xHB torque available with DV-III Ultra Rheometer only.
Viscometer Operation
Attach the Vane Spindle to your Viscometer as shown in the illustration on page one (Note: spindles
have a left-hand thread for installation). Immerse the Vane Spindle into the fluid past the top of the
Vane to the primary immersion mark on the shaft. Operate your Viscometer per the instructions in the
Operator’s Manual that came with your instrument. Record the instrument Speed (in RPM) and the
Torque Reading (as a percent). The Viscosity is calculated manually using the following equation:
Table 3 - Viscometer Torque Constants
Viscosity (cP) = 100 * TK * SMC * Torque Model TK
RPM
where LV 0.09373
RPM = Viscometer spindle speed in RPM RV 1
TK = Viscometer torque constant from Table 3 HA 2
SMC = Spindle multiplier constant from Table 4
Torque = Viscometer torque (%) expressed as a HB 8
number between 0 and 100 5xHB 40
Table 4 - Spindle Multiplier Constants and Accuracy
If the secondary immersion mark (midpoint of the vane) is Spindle SMC Accuracy*
chosen due to small container size, multiply the torque reading V-71 2.62 ±2%
by a factor of two (2). V-72 11.1 ±2%
V-73 53.5 ±2%
Viscosity (cP) = 100 * TK * SMC * 2xTorque V-74 543 ±5%
RPM
V-75 213 ±3%
* Allowable error percentage is calculated on the
full scale range viscosity for each spindle at a
defined speed.
M02-290-D0313
