The key to ordering a brush is the block diameter relative to the machine size. A brush is specified at 2" smaller than the machine. To measure your machine, tip the machine back, expose the bottom of the chassis and measure the inside diameter. Remember, most floor machines are listed by their cleaning path, and not the physical dimensions of the brush or chassis or deck. This is because when you attach a brush to a machine, and when it's in the operating position, the weight of the machine causes the brush fibers to flair-out 2" or more in length. Therefore, a machine advertised as a 18" or 20" cleaning path, should be equipped with a brush with a block that measures 16" or 18" respectively. Just remember that the brush must fit entirely "within" the floor machine chassis.
If you have a Pullman-Holt, order the same size brush as your machine. We have already sized the block correctly so it fits entirely within the chassis. If you do not know the size of your Pullman-Holt floor machine, measure the inside diameter of the chassis as explained above and add 2". This is the size brush you want to order.
What is the difference between drive brush & pad driver?
The drive brush has trimmed nylon bristles designed to hold a floor pad to the floor. The pad driver functions similar to Velcro, plastic barbs are used to the secure pads to the driver block, which is attached to the floor machineâs base. Drive brushes are recognized for removing vibration and wobble. Some pad drivers allow the securing of the pad via a center locking device or nut. Caution: Do not use a drive brush without a pad, and do not store a floor machine with the drive brush attached.
The only time a pad driver is preferred over a drive brush, is with higher speed (RPM) machines, such as the 20â 1.5hp Dual Speed or Burnisher. (All drivers and/or brushes measure 2â smaller in diameter to the machine used on.)