Product Catalogue

Spindles are important parts of machine tools. Traditional machine tool spindles need the forced motion of a driving device (such as belts, gears, etc.) for normal rotation. Electric spindle, also known as the built-in motor spindle unit, is mainly characterized in the function integration of the motor and spindle, which realized by placing the motor inside the spindle to drive the spindle through driving power. The structure is shown in the table below.

Such bearings are provided with the following features:

1. Compact structure, high mechanical efficiency, low noise, small vibration, high precision;

2. Smooth operation, no impact, extended life of the spindle;

3. Easy to realize high-speed rotation and stability of dynamic and static accuracy;

4. Infinitely variable speeds as if in the range of the rated rotational speed so as to meet the requirements on operating conditions and load changes;

5. Large torque for heavy cutting and accurate C shaft positioning and transmission functions suitable for shaft work by use of motor vector control technology;

6. Higher level turning, boring and other processes required by computerized numerical control machines and other digital control machine tools.

Based on the characteristics above and its extensive use, the electric spindle is of great significance for improving the productivity and processing quality, and promoting development in the machine tool industry.

So far, Shanghai Bem Bearing Co., Ltd. has developed and manufactured electric spindles of 8 categories, 12 series and over 160 kinds. The rated speed ranges from 3000r/min to 150000r/min, and the power from 0.2Kw to 75Kw; the supporting forms include high-speed precision angular contact ball bearings, ceramic ball bearings, air bearings, magnetic bearings; lubricating systems include grease, oil mist, oil gas, etc.; working conditions include room temperature, also available at -253 ℃ and 1400 ℃; the output forms are constant torque and constant power (as shown in the table below).

1. Constant Torque Spindle

2. Constant Power Spindle


In addition, Shanghai Bem Bearing Co., Ltd. has developed three series of mechanical spindles for application in machining center (also known as computerized numerical control machine), engraving and milling machine, etc. BEM spindles are briefly introduced as follows:

Grinding motor spindle DZ, GDZ, 2GDZ and specialty mill with four major series. The DZ series is a general-purpose grinding head GDZ Series has a high output power and rigid; 2GDZ series has more power and higher rigidity, its main performance indicators close to or reached the international advanced level in the 1990s, our the product of choice for a new generation of highly efficient grinder and replace imported equipment spindle; special series designed to meet the needs of the special structure and function.

Milling electric spindles are divided into three series, i.e., XD, XDS and XDJ, to match with CNC milling, engraving and milling machine, cutting machine, machining center and parallel machine for high-speed milling and engraving process, thus applicable to process of conventional parts, tools and dies, woodworking pieces, etc. Wherein, XDS series are provided with automatic broach machanism while XDJ series electricity spindles for machining center are equipped with a code wheel for precise control of rotational speed and accurate stop, and have the automatic broach change function.

Drilling electricity spindles include ZD and ZDS series, mainly used for high-speed drilling of pore and micropore in the printed circuit board (PCB), oil pump nozzle and other industries. ZDS series are provided with automatic broach machanism and rapid broach change function.

Ed series high-speed centrifuge electricity spindle, the regeneration product of new generation of high-speed centrifuge, is widely used in the high-speed centrifugation applications such as centrifugal separation, centrifugal grinding, centrifugal atomization, centrifugal drying, centrifugal tests, etc. Improvement in centrifugation speed can greatly enhances the centrifugal effects, increases the refining degree and separation accuracy of centrifugal objects, and improves the centrifugal efficiency..

CD series high-speed electric spindles for turning machines are provided with high machining precision and surface roughness, thus particularly suitable for application in processing aluminum and copper-based non-ferrous metal parts.

The domestic first LD series high-speed spin rolling electric spindle is suitable for processing the inner grooved copper tube for heat exchange of an air conditioner.

A special-purpose dedicated electric spindle is specifically designed to meet the special conditions in accordance with the special needs of the user.

XP, XPS, CP series mechanical spindles are applicable to machining centers, CNC milling machines, CNC lathes and woodworking equipment, and can be directly connected to the motor or in the belt driven mode, with characteristics of high speed, high precision and unitization. The XPS series are equipped automatic broach machanism.

Example: GDZ18g indicates GDZ series grinding electricity spindles whose rotational speed is 18000r/min, using grease lubrication.

2. Code of Non-grinding Spindles

Example: 220XDS15 means CNC milling electric spindle with automatic broach, whose outer diameter is Φ220, rotational speed is 15000 r/min and cylinder score is used as the cylinder.