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Stihl 021 Crankshaft and Bearings Replacement

The crankshaft takes the up and down motion of the chainsaw piston via the connecting rod and turns it into circular motion. The Stihl 021 Crankshaft & Bearing are normal wear parts. The crankshaft is precision made to endure the high speeds and significant forces it encounters and can be either a solid one-piece crankshaft or a three-piece crankshaft pressed together for precision performance. The crank shaft is supported by either precision ball bearings and or needle bearings. Our aftermarket suitable replacement Stihl 021 Crankshaft & Bearings parts meet or beat OEM specs, offer a considerable cost savings, and usually ship in 24 - 48 hours.

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STIHL CRANKSHAFT SEALS REPLACES STIHL # 9638-003-1581 STIHL CRANKSHAFT SEALS REPLACES STIHL # 9638-003-1581

SUITABLE REPLACEMENT GASKET SEALS

Our Price: $9.99
STIHL CRANKSHAFT BEARINGS REPLACES STIHL # 9503-003-0311 STIHL CRANKSHAFT BEARINGS REPLACES STIHL # 9503-003-0311

SUITABLE REPLACEMENT CRANKSHAFT BEARINGS

Our Price: $14.95
CRANKSHAFT BEARINGS AND SEALS, REPLACES PART # 9503-003-0340 AND 9638-003-1581 CRANKSHAFT BEARINGS AND SEALS, REPLACES PART # 9503-003-0340 AND 9638-003-1581

Suitable Replacement Crankshaft Bearings And Seals

Our Price: $24.95
CRANKSHAFT SEALS, REPLACES PART 9638-003-1581 CRANKSHAFT SEALS, REPLACES PART 9638-003-1581

Suitable Replacement Crankshaft Bearing Seals

Our Price: $24.95
STIHL REPLACEMENT CRANKSHAFT BEARINGS & SEALS PART #'s 9503-003-0311, 9638-003-1581, 9639-003-1585 STIHL REPLACEMENT CRANKSHAFT BEARINGS & SEALS PART #'s 9503-003-0311, 9638-003-1581, 9639-003-1585

SUITABLE REPLACEMENT CRANKSHAFT BEARINGS AND SEALS

Our Price: $24.95
STIHL CRANKCASE ASSEMBLY REPLACES STIHL PART # 1123-020-3033 STIHL CRANKCASE ASSEMBLY REPLACES STIHL PART # 1123-020-3033

STIHL CRANKCASE ASSEMBLY, WILL REPLACE THESE STIHL PARTS NUMBERS: 1123-020-3003, 1123-020-3003, 1123-020-3005, 1123-020-3000: NOTE THIS CRANKCASE ASSEMBLY WILL NOT FIT THE EASY START MODELS. NOTE: OIL PUMP COMES ALREADY INSTALLED IN CRANKCASE

Our Price: $49.95
   
 

Suitable Replacement Stihl 021 Crankshaft and Bearings Parts

Here is some general information about the purpose and function of these parts that may include the Stihl 021 crankshaft and bearings. The connecting rod can be either forged or cast. The rod can be one piece or made from two pieces. The connecting rod has needle bearings so that the connecting rod rides on the crankshaft rod journal. The piston is fastened to the connecting rod by a wrist pin supported by a needle bearing.

Stihl 021 Crankshaft & Bearings

Performance Parts Supply air filters meet or exceed OEM specifications for Stihl 021 crankshaft and bearings and they cost less than OEM replacement parts while maintaining excellent quality and durability. Extremely high chain saw RPMs drive the need for ball bearings and needle bearings on the crankshaft, connecting rod and wrist pin. At full throttle, the RPM of the engine can be nearly 15,000 [depending on the saw and manufacturer]. This equates to 250 revolutions per second.

The Stihl 021 crankshaft has two other purposes. It provides a fastening point for the flywheel which controls inertia, spark timing, and cooling. The second purpose involves transmitting power from the crankshaft to drive the chain via a sprocket. The crankshaft will have a centrifugal clutch that is usually screwed into the crankshaft, keyed on, or tapered fit.

The Stihl 021 bearings used on the crankshaft are rated for high speed and are a close tolerance bearing. The needle bearings are designed for high speed and close tolerance and can be either a caged needle bearing or a loose needle bearing.

The crankshaft has seals that ride on the crankshaft to keep outside air from entering the crankcase and to keep the fuel charge in the crankcase for the engine.

Stihl 021 Chainsaw Crankshaft & Bearings Replacement parts

Important NoticeWe are not affiliated with any chainsaw manufacturers and we do not attempt to make any affiliations with them. Any manufacturer logos, model names and numbers are the sole property of their respective owners and are used here for the sole purpose of reference. We do not sell OEM chainsaw parts for any brand. We do however, offer high quality suitable replacement parts guaranteed to meet or beat OEM part specifications like our suitable replacement Chainsaw Stihl 021 Crankshaft & Bearings we offer for sale for you to buy and put into their brand of chainsaws.