Selection maths, failure analysis, manufacturing detail and sourcing checklists — the questions buyers ask us before they send an RFQ, answered in full.
A seized idler is rarely a bad bearing — it is a sealing, lubrication or specification problem that shows up as one. Read the failed roller first, then fix the cause.
We publish two guides a month, chosen from questions that come in with real RFQs. Tell us which one you want first:
Diameter, trough angle, spacing, rpm limits, standards side by side (CEMA / DIN / GB).
Intent: buyer is specifying now.
Seized bearings, misalignment, carry-back, shell wear — cause and fix.
Intent: buyer has a running problem.
What happens inside the factory: machining fits, runout testing, bonding, salt spray.
Intent: buyer is qualifying a supplier.
Port, cement, steel, coal mine, power, grain — each with its own failure mode.
Intent: buyer wants proof you know his duty.
MOQ, lead time, Incoterms, factory audit checklist, packing and container loading.
Intent: buyer is comparing suppliers.
Project write-ups and exhibitions.
Intent: buyer is checking track record.
P1 = write first (highest buying intent). Each becomes a standalone page under /blogs/ with its own URL, schema and internal links.
| # | Working title | Target query | Pri |
|---|---|---|---|
| 1 | How to Choose Conveyor Idlers: The Three Questions That Decide the Build | how to choose conveyor idler | P1 |
| 2 | Idler Diameter vs Belt Speed: The rpm Limit Nobody Checks | conveyor idler rpm limit | P1 |
| 3 | Troughing Angle 20° / 35° / 45°: What Changes and When to Use Each | troughing angle conveyor | P1 |
| 4 | Roller Diameter 89 / 108 / 133 / 159 / 194 mm — Matching Roller to Belt Width | conveyor roller sizes | P2 |
| 5 | CEMA vs DIN vs GB Idler Classes: Reading a Spec Sheet Side by Side | CEMA idler class | P2 |
| 6 | Impact Idler Spacing at the Loading Point | impact idler spacing | P2 |
| # | Working title | Target query | Pri |
|---|---|---|---|
| 7 | Why Idler Bearings Seize Before They Wear Out | why conveyor rollers seize | P1 |
| 8 | Conveyor Belt Misalignment: Seven Causes and the Fix for Each | belt misalignment causes | P1 |
| 9 | Carry-Back: How a Worn Cleaner Destroys Your Idlers | belt carry back idler damage | P1 |
| 10 | Labyrinth vs Contact Seal: Which for Dust, Which for Washdown | idler seal types | P1 |
| 11 | Sealed-for-Life vs Greaseable Idlers | greaseable conveyor idler | P2 |
| 12 | Idler Failure Modes: Shell Wear, Seal Failure, Shaft Deflection | idler failure modes | P2 |
| # | Working title | Target query | Pri |
|---|---|---|---|
| 13 | What Runout Testing Actually Catches (and Why ≤ 0.5 mm Matters) | idler runout test | P1 |
| 14 | Inside an Idler: Nine Steps from Tube to Final Test | how conveyor idlers are made | P1 |
| 15 | Bearing Housing Fit: Why We Machine to k6 | bearing housing tolerance | P2 |
| 16 | Rubber Lagging: How Bond Strength Is Tested | pulley lagging bond test | P2 |
| 17 | How We Test Salt Spray Resistance for Port Duty | salt spray test idler | P3 |
| 18 | Why 45# Cold-Drawn Shaft, Not Mild Steel | conveyor roller shaft material | P3 |
| # | Working title | Target query | Pri |
|---|---|---|---|
| 19 | Port Terminal Conveyors: Salt, Dust and 24/7 Duty | port conveyor idler | P1 |
| 20 | Coal Mine Idlers: MT821, Flame-Retardant and Anti-Static Rules | coal mine conveyor idler | P1 |
| 21 | Cement Plant: Handling 500 °C Material Without Cooking the Seal | high temperature conveyor idler | P2 |
| 22 | Steel Mill: Radiant Heat to 1200 °C at the Transfer Point | steel mill conveyor roller | P2 |
| 23 | Power Plant Ash Handling: Abrasion as the Design Driver | ash handling conveyor | P3 |
| 24 | Grain & Fertilizer: Corrosion, Hygiene and Washdown | grain conveyor idler | P3 |
| # | Working title | Target query | Pri |
|---|---|---|---|
| 25 | How to Read an Idler Quotation (and Spot the Hidden Downgrades) | conveyor idler price comparison | P1 |
| 26 | Conveyor Idler MOQ, Lead Time and Incoterms: What to Expect | conveyor idler MOQ lead time | P1 |
| 27 | Factory Audit Checklist for Conveyor Component Buyers | conveyor idler factory audit | P1 |
| 28 | OEM / ODM: What Customisation Actually Means for Idlers | conveyor idler OEM | P2 |
| 29 | Shipping Conveyor Idlers: Packing, Container Loading, FCL vs LCL | shipping conveyor idlers | P2 |
| 30 | Certificates Buyers Ask For: ISO, CE, API, MT821 Explained | conveyor idler certification | P2 |
Send the question your team keeps arguing about. If it is technical, it becomes a guide.
Request a Quote