Alternator with pulley 14V 55A without regulator 5211-7745

This 14V alternator with 55A output is designed for Zetor UR1 series tractors. It powers the electrical system and charges the battery while the engine is running. It features a 17mm shaft diameter pulley and a cooling fan. The housing is made of heat, corrosion, and vibration-resistant aluminum. The alternator works with an external voltage regulator or integrated versions, depending on the vehicle configuration.

Technical specifications:

• Nominal voltage: 14 V
• Current: 55 A
• Axle (pulley) diameter: 17 mm
• Direction of rotation: right (clockwise)
• Cooling type: air (front fan)
• Mounting: 2-bolt
• Material: aluminum + galvanized steel
• Application: 12V battery charging system

Will Suit The Following Zetor Tractor Models

• Series Crystal: Crystal 8011, Crystal 8045, Crystal 8111, Crystal 8145, Crystal 10145, Crystal 12011, Crystal 12045, Crystal 12111, Crystal 12145
• Series UR I: 4911, 5011, 5211, 5245, 5911, 5945, 6011, 6045, 6211, 6245, 6911, 6945, 7011, 7045, 7211, 7245, 7711
• Series UR II: 8011, 8045, 8111, 8145, 8211, 8245, 9111, 9145, 9211, 9245, 10111, 10145, 10211, 10245, 11211, 11245, 12011, 12045, 12111, 12145, 12211, 12245, 14145, 14245, 16145, 16245

Product advantages (characteristics):

• High current output (55 A) ensuring stable charging
• Quiet operation and durable rotor bearing
• Resistance to high temperatures and vibration loads
• Aluminum housing with increased thermal conductivity
• Compatibility with the original bracket and V-belt

Service Advice: When replacing the alternator, check the condition of the V-belt and the charging voltage (correct values: 13.8–14.4 V). It is not recommended to operate the alternator with the battery disconnected, as this may damage the voltage regulator. After installation, clean and preserve the cable terminals.

Symptoms of damage or wear:

• Battery not charging (charge indicator light comes on after starting)
• Low voltage in the electrical system
• Loud bearing operation or noise at high speeds
• Excessive heating of the alternator housing

Consequences of neglecting replacement:

• Battery discharge and immobilization of the tractor
• Damage to the voltage regulator or electrical system
• Failure of lighting and operation of electrical devices
• Risk of burning cables or short circuit in the charging system

OEM Reference: 364735X1, 59115740, 89355901, 939950

Weight	5.04 kg