How to tell when it's time to change your doubler chain?5 signs not to ignore

Hey, your production line is not always a problem recently? Obviously not overloaded, but the chain does not move jammed shutdown, the boss was anxious and jumped straight to the feet: "This thing in the end can not hold?" Do not panic! Today we will chatterThe dying sign of the multiplier chain-Catch these 5 vital signs to make sure you don't step in a hole when you change chains!

I. The chain is starting to "lie flat and rot".

The teacher knows all about it.Sagging over 2% is an alarm.! Three simple tricks to teach you to self-check:

1. ​measure the span of a ruler: Find the longest overhanging section between the two sprockets and measure the sag distance.
2. ​Percentage: (sag height ÷ span length) × 100%
3. ​judge between life and death::
   • ≤1% → The boy's in good spirits.
   • ​1%-2% → Sub-healthy, tighten it up!​
   • ​＞2% → It's basically hopeless. Prepare for the aftermath!​

Personal experience: last year, the electronics factory has a buddy did not manage to sag, the results of the chain collapse ripped crooked rails, repair costs enough to buy three new chain!

Second, the rattling is comparable to "heavy metal rock".

​A good chain sounds like an electric fan humming, a sick chain is simply a broken gong in a meeting!Keep your ear to the rails and listen for the real thing:

Three. "No good meat".

Hit the torch on the chain film and call 120 as soon as you find these:
✅joint crack(like a porcelain openwork pattern)
✅Roller grinding pits"If you can get your fingernail stuck in it, you can get it stuck in it.
✅Rusting into a pockmarked face(Be especially careful in acid mist environments in food factories.)

Lesson in tears: an auto parts factory found that cracks are still hard to hold on, three days after the broken chain smashed precision fixture, stop production losses enough to buy ten sets of chain!

Fourth, elongation exceeds the standard - the most hardcore indicator!

​Don't guess! Calipers are the best way to measure pitch.(Methods to follow):

1. Straighten 10 links of chain to mark
2. Calipers measure the total length L
3. Calculated elongation = (measured L - standard L) ÷ standard L × 100%
   ​Interpretation of results::

• ​<0.4% → steady as an old dog​
• ​0.4%-0.8% → Anytime Thunderbolt​
• ​＞0.8% → Change immediately! Break in the next second!​

V. "Strike" for three days.

These occurrences indicate that it really can't carry on:

• ​Monthly average of > 3 times of chaining(Especially if it's not loaded)
• ​It's only been a week since I adjusted the tensioner.​
• ​≥ 2 repairs per month for the same segment of the chain​

Real case: the power plant dead carry not to change the chain, the result of the monthly failure from 2 times soared to 15 times, the capacity to drop 30% - save the money of a chain, lost into the annual bonus!

💡 Personal opinion: it's time to change don't carry it hard!

I keep getting asked, "Can you make it work for another six months?" Hey!Chains are not old coats - they can still be worn with a patch.! Do the maths:

• New chain: 20,000/bar, 3 years warranty
• Cost of strong support: average monthly downtime of 8 hours x hourly production of 50,000 = 400,000 per month
  ​Which one do you think is the best deal?Remember that, brother:

​The ultimate money-saving trick is not not to change, but to change just right​
When it's time to get out, one day out of production is enough to buy ten chains!

(concluded)
: Chain Sag Adjustment Standard
:: Environmental corrosion effects on chains
: Correlation between failure frequency and chain condition
:: Maintenance costs and replacement decisions
: Points for Chain Appearance Inspection
: Elongation measurement method