Senken 12V 3.2kg 40W Wail Traffic Siren Motorcycle Alarm Siren

• High intensity shell, light body, high corrosion resistance and hard to color fade;
• Huge power, high quality tones and low distortion;
• Two speakers for one set: main speaker and subsidiary speaker;
• Can be matched with wire or wireless amplifier.

Sincere respect by Senken Group Co,.Ltd.

• High intensity shell, light body, high corrosion resistance and hard to color fade;
• Huge power, high quality tones and low distortion;
• Two speakers for one set: main speaker and subsidiary speaker;
• Can be matched with wire or wireless amplifier.

Sincere respect by Senken Group Co,.Ltd.

A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary Roller Bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter.Like all bearings, they are used to reduce the friction of a rotating surface.
Compared to Ball Bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.

Needle Roller Bearings

Needle Roller Bearings,Steel Needle Roller Bearing,Double Row Needle Roller Bearing,High Precision Needle Roller Bearings

Ningbo Ritbearing Imp & Exp Co.,Ltd. , https://www.nbbearing.de