New technology

FC metal
oil-impregnated bearings with no noise emission

Low friction coefficient and no noise: fluorine coating oil-impregnated bearings

Our oil-impregnated bearings are products that are manufactured by fluorine coating, then sized and impregnated with oil after sintering, utlizing functions of sintered oil-impregnated bearings without plugging oil pores on its sliding surface. These processes lead its dimensional accuracy stable, which makes a bearing nothing less than other sintered oil-impregnated bearings. Fluorine coat's elasticity mutes sliding noise and rattles and yields smoother and more stable oil-impregnated bearings with low torque by its elasticity, the charasteristics of fluorine material, as well as low friction coefficient and oil-impregnating.

This processing can also be applied to our poreless metal, or oil-impregnated bearings, allowing no oil percolation or leakage as their charasteristics.

* Each of copper, iron or brass can be base material and is selectable depending on its usage.
* Coating can be processed only on sliding surfaces, chamfers of end faces and all surfaces of peripheries as well as sliding surfaces on inner diameter. (limited to inner diameter φ1.5 or more)

* Dividing and observing our products enables you to recognize that all surfaces are coated.

Torque data: testing conditions

  • Work-size: φ2×φ5×3L
  • Impregnating oil: HS-56
  • Shaft: SUB φ2-0.003 surface roughness 0.2S
  • Testing environment: constant temperature/25±1℃
  • P value: 8.32kg/㎠
  • V value: 18.82m/min
  • PV value: 157kg/㎠・m/min

Poreless metal
oil-impregnated bearings with no impregnated oil scattered

No impregnated oil percolating or leaking, and assisting oil films

Recently harmful effects caused by scattering of impregnated oil and short life time caused by waste of impregnated oil in fan motors and spindle motors using oil-impregnated bearings have been an issue.

Poreless metal is an oil-impregnated bearing product that was developed for the purpose of improving them, to prevent impregnated oil from leaking by plugging pores on peripheries, end faces and chamfers, sliding surfaces excluded.

With the oil pressure caused by shaft's working effect during operation becoming the pressure pushed toward inside bearings, pipe resistance on oil pores inside bearings facilitates oil flowing toward the direction of end faces and chamfers on bores with less friction. These have been improved by plugging pores on peripheries from which oil could leak, making the pressure inside higher by overcoming oil leakage and reinforcing the strength of oil films.

* Each of copper, iron or steel and copper can be base material and is selectable depending on its usage. The process material of poreless surfaces is bronze.

Examples of usages

  • Fan motors, spindle motors, round piece chains

LF metal
oil-impregnated bearings with low torque

Nonuniform rotations, current value and noise are reduced. Besides, the oil-impregnated bearings have no concern about life time and rust.

Our oil-impregnated bearings are products that are created by coating films synthesized from fluororesin and metal ingredients, sintering them, then being sized with high precision and impregnated with oil, thus utilizing the funcions of sintered oil-impregnated bearings without plugging oil pores on sliding surfaces.

This processing can also be applied to our poreless metal, or oil-impregnated bearings, allowing no oil percolation or leakage as their charasteristics.

Charasteristics

  1. Low torque enables them to reduce torque irregularities and nonuniform rotations.
  2. The reduction of bearing torque enables electricity consumption to be reduced.
  3. The sliding surfaces are filmed by resin, thus enabling noise emmision to be reduced.
  4. Having excellent abrasion resistance, thus lengthening bearings's life time.

* Each of copper or iron can be base material and is selectable depending on its usage.

Torque data: testing conditions

  • Work-size: φ2×φ5×3L
  • Impregnating oil: HS-56
  • Shaft: SUB φ2-0.003 surface roughness 0.2S
  • Testing environment: constant temperature/25±1℃
  • P value: 8.32kg/㎠
  • V value: 18.82m/min
  • PV value: 157kg/㎠・m/min
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