Cross Shaft Agitators

In cross shaft and especially side insert agitators, the major problem is inner bearing failure.  Bearings fail, not because of load, but because of contamination with leaking stock.  The James Brinkley Company provides spherical roller bearings very conservatively sized, but failure still occurs because of contamination.  In order to try to avoid this problem, we provide a slinger and the best available bearing seal.  We can also provide an optional split UHMW dam to act with the slinger as a labyrinth to isolate the inner bearing.  We believe this is a unique feature for agitators.  It works well on other mill equipment.

• A-36 structural steel construction housing with ANSI steel flange tank connection faced with stainless as required.  An optional wall insert with stainless steel contact parts is available.
• Pipe shafts with heavy duty cast couplings and flanges.  Shafts are steel with stainless 16-gauge sheet cladding for superior fatigue and shock resistance.

• Large AISI Stressproof or 4140 steel stub shafts protected by replaceable stainless steel sleeves.
• Stuffing boxes and seals come in either cast or stainless steel construction.  They can take 4 square packing rings or an optional mechanical seal. A split brass lantern ring is provided in the stuffing box to limit flush water use and support the shaft under shock load.
• Cast glands with brass gland studs and nuts are standard.  Optional split glands are available.  Replaceable stuffing boxes are also available as options.
• Adjustable pitch blades in cast steel or stainless steel that can be adjusted to process requirements.

• Spherical roller bearings sized for L-10 lives of over 100,000 hours with occasional heavy shock loading.  Bearings are protected by the best seal available from the manufacturer and the shaft is provided with a rubber slinger.  Brinkley can also provide, as an option, a UHMW labyrinth diaphragm at low cost to protect the bearing. Pillow block units are accessible for removal and can, optionally, be split type spherical roller bearings if desired. All shafts are stepped to provide short bearing pulls and all bearings are replaceable with shaft in place.
  
• Brinkley cross shaft agitators are directly driven.  Gear drives should be mounted independently with the drive motor on a separate base.  Brinkley will provide your mill standard drive in parallel shaft or other configuration as required.
  
• Extractions fittings can be added to the agitators to allow suction lines to be placed in a close area with an agitator, such as a couch pit.  Fittings are constructed of ¼”stainless steel plate, usually with 1” diameter holes and cleaned by a heavy wiper bar rotating on the shaft.  Extraction fittings are made to large diameters to accommodate high pump out rates and include a chamber to stabilize flow behind the suction plate and feed the discharge nozzle.  Discharge nozzle outlets are fabricated from stainless steel.