CEMA D Unequal Troughing Idler

Product Overview

Built to CEMA D heavy-duty, the Unequal Troughing Idler pairs a longer center roller with shorter side rollers to tune belt support in aggregate and mining transition zones and cement carry-side belts. The offset L1/L2 layout eases edge stress on 24–72 inch belts, while a thick channel frame, sealed precision bearings and IP66 labyrinth seals deliver reliable service where a CEMA E unit would be over-spec. It is a direct replacement for matching D-grade unequal frames.

Key Features

CEMA Grade

D (Heavy-Duty)

Roller Layout

L1 center longer, L2 sides shorter

Roller Diameter

5" & 6" (Ø127–150mm)

Trough Angle

20° / 35°

Belt Width

24"–72" (600–1800mm)

Frame

Thick channel frame

Seal

IP66 labyrinth

Applications

Aggregate and mining transition zones
Conveyor sections needing belt support tuning
Cement plant carry-side belts

How to Choose This Component

Grade and load: choose CEMA E for extra-heavy, high-tonnage and overland duty; CEMA D for heavy-duty mainstream sections. Size the roller diameter and bracket spacing to the expected impact, belt load and material flow.
Belt width: match the part to your belt (BW 24"–72"). When requesting a quote, send belt width, required trough angle or drum diameter, and installation spacing so we can confirm a drop-in fit.
Working environment: tell us whether the duty is wet, dusty, sticky, abrasive or high-drop so we can match the seal, lagging, material and surface finish.
Retrofit and mounting: provide existing bracket spacing and frame type for a direct replacement; painted or galvanized finishes are both available.

Why Source These Spare Parts From Us

Built to CEMA D/E and ISO alignment standards for interchangeability with existing frames.
Direct factory supply with no middleman markup; OEM and private-label orders accepted.
Custom dimensions, lagging, seals, shafts and finish built to your specification.
Seaworthy timber or carton export packing; shipped to 60+ countries by sea, air and express freight.
Engineer support on selection and a written quote within 48 hours.

Frequently Asked Questions

What build grade and rating is the CEMA D Unequal Troughing Idler?

CEMA D Unequal Troughing Idler is supplied at D (Heavy-Duty). It is engineered to match CEMA D/E and ISO expectations for BW 24"–72" belt duty and can be customized to your dimensions, lagging and finish.

What belt widths does the CEMA D Unequal Troughing Idler cover?

This component is sized for BW 24"–72". Send your exact belt width, required angle or diameter and installation spacing when requesting a quote so we can confirm a direct, drop-in fit.

How is the CEMA D Unequal Troughing Idler sealed against dust and water?

Protection follows IP66 labyrinth. Labyrinth-style sealing keeps grease in and fines, moisture and wash-down out, extending service life in harsh bulk-handling conditions.

Can I order a custom CEMA D Unequal Troughing Idler?

Yes. Dimensions, lagging or coating, seal, shaft and finish are built to your specification; standard lead time is 15–25 working days and 30–45 days for fully custom builds.

Ordering & Customization

MOQ: trial and sample orders welcome; volume improves pricing
Lead time: 15–25 working days standard; 30–45 days for custom build
Custom: size, lagging, seal, shaft and finish built to your specification
Export packing: seaworthy timber or carton packing for long sea transit

Typically Paired With

Components commonly ordered alongside this part to complete the station:

CEMA E Unequal Troughing Idler CEMA D Equal Troughing Idler 5" / 6"CEMA D Unequal Impact Troughing Idler