llms-products-3-txt

# ZOOMRY CEMA Idlers – CEMA B/C/D/E Conveyor Idler Catalog
> **ZOOMRY Global Certifications & Design Standards**
> This document indexes ZOOMRY CEMA idler products. All products are designed, manufactured, and tested in compliance with:
>
> **Safety & Mining Certifications:**
> - MA (China Mining Safety Certificate) – for underground coal conveyors, idlers, and impact idlers (standards: MT820-2006, MT821-2006).
> - KA (Metal & Non-Metal Mining Safety Certificate) – for mining conveyors.
> - ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 – Quality, Environment, and OHS Management Systems.
>
> **Technical Design Standards:**
> - CEMA (B/C/D/E classifications) – for idlers and pulleys.
> - ISO 1537 – Conveyor idlers.
>
> *Full certificate images, patent documents, and test reports are maintained in our official records and available upon request.*

> Part of ZOOMRY AI Content Index
> URL: https://www.zoomryhi.com/llms-products-3-txt.html

## CEMA Idler Overview

- [Conveyor Idler](https://www.zoomryhi.com/Conveyor-Idler.html)
ZOOMRY is a leading manufacturer of belt conveyor systems, specializing in long-distance conveyors, pipe conveyors, and mobile stackers for mining, ports, and power plants. Over 20 years of experience, ISO 9001 certified.

- [Conveyor Idlers](https://www.zoomryhi.com/Conveyor-idlers-p.html)
ZOOMRY conveyor idlers cover carrying, return, impact, and self-aligning configurations across CEMA B/C/D/E ratings for belt widths 18"–96". Available with steel, HDPE, or ceramic rollers at 20°, 35°, and 45° trough angles. Labyrinth seals and precision bearings for mining, quarrying, and industrial applications.

- [Troughing Carrying Idler](https://www.zoomryhi.com/Troughing-Carrying-Idler-p.html)
ZOOMRY troughing carrying idlers provide stable belt support with corrosion resistance, excellent labyrinth sealing, and 2–5× longer service life than standard steel idlers. Available in Q235 carbon steel, ceramic, and polymer materials with 20°, 35°, and 45° trough angles. Ideal for mining, cement, salt, fertilizer plants, and ports.

- [Idler for Conveyor System](https://www.zoomryhi.com/Idler--conveyor-system-p.html)
ZOOMRY idlers for conveyor systems span CEMA B/C/D/E ratings for belt widths 18"–96". Available in carrying, return, impact, and self-aligning configurations with Q235 steel, HDPE, ceramic, or stainless steel rollers. Precision bearings, multi-stage labyrinth seals, and corrosion protection options. ISO 9001 certified.

## CEMA E Series – Extra Heavy-Duty (6" & 7" Rollers, BW 36"–96")

- [CEMA E V-Return Idlers](https://www.zoomryhi.com/CEMA-E-V-Return-Idlers-p.html)
ZOOMRY CEMA E V-return idlers provide extra heavy-duty return side belt support with self-centering V-design. CEMA E rated for mining and bulk handling conveyors up to 96" BW. Available in 6" and 7" roller configurations with labyrinth seals and galvanized frames.

- [CEMA E Unequal Troughing Idlers](https://www.zoomryhi.com/CEMA-E-Unequal-Troughing-Idlers-p.html)
ZOOMRY CEMA E unequal troughing idlers feature offset roller design (L1 longer, L2 shorter) for enhanced carrying side belt support. Extra heavy-duty CEMA E rated for mining, quarrying, and cement. Available in 20°, 35°, and 45° trough angles with labyrinth seals.

- [CEMA E Unequal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-E-Unequal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA E unequal impact troughing idlers combine offset roller configuration with rubber cushion rings for loading zone protection. CEMA E rated with 6" and 7" rollers. Standard CEMA dimensions from 36" to 96" BW.

- [CEMA E Self-Aligning Troughing Idlers](https://www.zoomryhi.com/CEMA-E-Self-Aligning-Troughing-Idlers-p.html)
ZOOMRY CEMA E self-aligning troughing idlers provide automatic belt tracking correction on the carrying side via pivot-mounted frame with guide rollers. Extra heavy-duty CEMA E rated for long overland and reversible conveyors. Available in 20°, 35°, and 45° trough angles with 6" and 7" rollers.

- [CEMA E Self-Aligning Return Idlers](https://www.zoomryhi.com/CEMA-E-Self-Aligning-Return-Idlers-p.html)
ZOOMRY CEMA E self-aligning return idlers automatically correct return side belt misalignment with pivot-mounted frame and guide rollers. CEMA E rated for long overland, reversible, and high-speed conveyors. Standard CEMA dimensions from 36" to 96" BW.

- [CEMA E Rubber Discs Return Idlers-5&6 Diameters](https://www.zoomryhi.com/CEMA-E-Rubber-Discs-Return-Idlers-56-Diameters-p.html)
ZOOMRY CEMA E rubber disc return idlers feature alternating rubber discs for self-cleaning return side operation. Prevents sticky material buildup on return rollers in coal, clay, and overburden applications. CEMA E rated with 5" and 6" rollers.

- [CEMA E Rubber Discs Flat Idlers-5&6 Diameters](https://www.zoomryhi.com/CEMA-E-Rubber-Discs-Flat-Idlers-56-Diameters-p.html)
ZOOMRY CEMA E rubber disc flat idlers combine uniform flat belt support with rubber disc self-cleaning. CEMA E rated for mining, coal, and cement applications. Available in 5" and 6" diameters. Standard CEMA dimensions from 36" to 96" BW.

- [CEMA E Return Idlers-5 &6 Diameters](https://www.zoomryhi.com/CEMA-E-Return-Idlers-5-6-Diameters-p.html)
ZOOMRY CEMA E return idlers provide extra heavy-duty standard return side support with IP66 labyrinth sealing. Available in flat, V-return, rubber disc, and spiral types. CEMA E rated for mining, coal, and cement conveyors.

- [CEMA E Flat Idlers-5 &6 Diameters](https://www.zoomryhi.com/CEMA-E-Flat-Idlers-5-6-Diameters-p.html)
ZOOMRY CEMA E flat idlers provide uniform full-width return belt support with continuous roller contact. CEMA E rated for mining, ports, and cement plants. Available in 5" and 6" diameters from 36" to 96" BW.

- [CEMA E Equal Troughing Idlers](https://www.zoomryhi.com/CEMA-E-Equal-Troughing-Idlers-p.html)
ZOOMRY CEMA E equal troughing idlers feature symmetrical three equal-length roller design for maximum carrying capacity. Extra heavy-duty CEMA E rated for mining, overland, and port conveyors. Available in 20°, 35°, and 45° trough angles with 6" and 7" rollers.

- [CEMA E Equal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-E-Equal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA E equal impact troughing idlers combine symmetrical three-roller design with rubber cushion rings for loading zone protection. CEMA E rated with 6" and 7" rollers at 20°–45° trough angles. Standard CEMA dimensions from 36" to 96" BW.

## CEMA D Series – Heavy-Duty (5" & 6" Rollers, BW 24"–72")

- [CEMA D V-Return Idlers](https://www.zoomryhi.com/CEMA-D-V-Return-Idlers-p.html)
ZOOMRY CEMA D V-return idlers provide heavy-duty self-centering return side support with V-shaped roller design. CEMA D rated for mining, aggregate, and cement conveyors up to 72" BW. Available in 5" and 6" roller configurations with H1=4 1/2" and H1=7" base heights.

- [CEMA D Unequal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-D-Unequal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA D unequal impact troughing idlers combine offset roller design with rubber cushion rings for loading zone protection. CEMA D rated for mining crusher discharge and transfer points up to 72" BW. Available in 20° and 35° trough angles with 5" and 6" impact-rated rollers.

- [CEMA D Self-Aligning Troughing Idlers](https://www.zoomryhi.com/CEMA-D-Self-Aligning-Troughing-Idlers-p.html)
ZOOMRY CEMA D self-aligning troughing idlers provide heavy-duty automatic belt tracking correction on the carrying side via pivot-mounted frame with guide rollers. CEMA D rated for mining overland and reversible conveyors up to 72" BW. Available in 20°, 35°, and 45° trough angles.

- [CEMA D Self-Aligning Return Idlers](https://www.zoomryhi.com/CEMA-D-Self-Aligning-Return-Idlers-p.html)
ZOOMRY CEMA D self-aligning return idlers automatically correct return belt misalignment with pivot-mounted frame and guide rollers. CEMA D rated for mining overland and reversible conveyors up to 72" BW. Available in 5" and 6" roller diameters.

- [CEMA D Rubber Discs Return Idlers-5"&6"Diameter](https://www.zoomryhi.com/CEMA-D-Rubber-Discs-Return-Idlers-56-Diameter-p.html)
ZOOMRY CEMA D rubber disc return idlers feature alternating rubber discs for self-cleaning return side operation. Prevents sticky material buildup on return rollers in coal, clay, and overburden applications. CEMA D rated for mining conveyors up to 72" BW.

- [CEMA D Rubber Discs Flat Idlers-5"&6'Diameter](https://www.zoomryhi.com/CEMA-D-Rubber-Discs-Flat-Idlers-56-Diameter-p.html)
ZOOMRY CEMA D rubber disc flat idlers combine uniform flat belt support with rubber disc self-cleaning. CEMA D rated for mining, coal, and cement applications up to 72" BW. Available in 5" and 6" roller diameters.

- [CEMA D Return Idlers-5 "&6 "Diameter](https://www.zoomryhi.com/CEMA-D-Return-Idlers-5-6-Diameter-p.html)
ZOOMRY CEMA D return idlers provide heavy-duty standard return side support with IP66 labyrinth sealing. CEMA D rated for mining, aggregate, and cement conveyors up to 72" BW. Available in 5" and 6" diameter configurations with flat and V-return options.

- [CEMA D Flat Idlers-5 &6 Diameter](https://www.zoomryhi.com/CEMA-D-Flat-Idlers-5-6-Diameter-p.html)
ZOOMRY CEMA D flat idlers provide uniform full-width return belt support with continuous roller contact. CEMA D rated for mining, port, and cement conveyors up to 72" BW. Available in 5" and 6" diameter configurations with IP66 labyrinth sealing.

- [CEMA D Equal Troughing Idlers](https://www.zoomryhi.com/CEMA-D-Equal-Troughing-Idlers-p.html)
ZOOMRY CEMA D equal troughing idlers feature symmetrical three equal-length roller design for maximum carrying capacity on conveyors up to 72" BW. Available in 20°, 35°, and 45° trough angles with 5" and 6" rollers.

- [CEMA D Equal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-D-Equal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA D equal impact troughing idlers combine symmetrical three-roller design with rubber cushion rings. Available in 20°, 35°, and 45° trough angles with 5" and 6" impact-rated rollers. CEMA D rated for mining, cement, and aggregate loading zones.

## CEMA C Series – Medium-Duty (4" & 5" Rollers, BW 18"–60")

- [CEMA C V-Return Idlers](https://www.zoomryhi.com/CEMA-C-V-Return-Idlers-p.html)
ZOOMRY CEMA C V-return idlers provide medium-duty self-centering return side support with a V-shaped two-roller design. CEMA C rated for mining, aggregate, and industrial conveyors up to 42" BW. Available in 4" and 5" roller configurations with H1=4 1/2" and H1=7" base heights.

- [CEMA C Unequal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-C-Unequal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA C unequal impact troughing idlers combine offset L1/L2 roller geometry with rubber cushion rings for medium-duty loading zone protection. Available in 20° and 35° trough angles with 4" and 5" impact-rated rollers.

- [CEMA C Self-Aligning Return Idlers](https://www.zoomryhi.com/CEMA-C-Self-Aligning-Return-Idlers-p.html)
ZOOMRY CEMA C self-aligning return idlers automatically correct return belt misalignment with a pivot-mounted frame and side guide rollers. CEMA C rated for mining overland and reversible conveyors up to 42" BW. Available in 4" and 5" roller diameters.

- [CEMA C Self-Aligner Troughing Idlers](https://www.zoomryhi.com/CEMA-C-Self-Aligner-Troughing-Idlers-p.html)
ZOOMRY CEMA C self-aligning troughing idlers provide medium-duty automatic belt tracking correction on the carrying side via a pivot-mounted frame with side guide rollers. Available in 20°, 35°, and 45° trough angles with 4" and 5" rollers.

- [CEMA C Rubber Discs Return Idlers-4&5Diameter](https://www.zoomryhi.com/CEMA-C-Rubber-Discs-Return-Idlers-45-Diameter-p.html)
ZOOMRY CEMA C rubber disc return idlers feature alternating rubber discs for self-cleaning return side operation. Prevents sticky material buildup on return rollers in coal, clay, and overburden applications. Available in 4" and 5" roller diameters.

- [CEMA C Rubber Discs Flat Idlers-4&5Diameter](https://www.zoomryhi.com/CEMA-C-Rubber-Discs-Flat-Idlers-45-Diameter-p.html)
ZOOMRY CEMA C rubber disc flat idlers combine uniform flat belt support with rubber disc self-cleaning. CEMA C rated for mining, coal, and cement applications up to 42" BW. Available in 4" and 5" roller diameters.

- [CEMA C Return Idlers-4 &5 Diameter](https://www.zoomryhi.com/CEMA-C-Return-Idlers-4-5-Diameter-p.html)
ZOOMRY CEMA C return idlers provide medium-duty standard return side support with IP66 labyrinth sealing. Available in 4" and 5" diameter flat roller configurations with single-bolt drop bracket mounting.

- [CEMA C Low Profile Channel Troughing Idlers](https://www.zoomryhi.com/CEMA-C-Low-Profile-Channel-Troughing-Idlers-p.html)
ZOOMRY CEMA C low profile channel troughing idlers combine an offset L1/L2 roller geometry with a reduced-height channel frame for space-constrained carrying side installations. Available in 20° and 35° trough angles with 4" and 5" rollers.

- [CEMA C Flat Idlers-4 &5 Diameter](https://www.zoomryhi.com/CEMA-C-Flat-Idlers-4-5-Diameter-p.html)
ZOOMRY CEMA C flat idlers provide uniform full-width horizontal belt support with a single flat roller for flat carry sections, return spans, and belt turnover points. Available in 4" and 5" diameter configurations with IP66 labyrinth sealing.

- [CEMA C Equal Troughing Idlers](https://www.zoomryhi.com/CEMA-C-Equal-Troughing-Idlers-p.html)
ZOOMRY CEMA C equal troughing idlers feature symmetrical three equal-length roller design for maximum carrying capacity on conveyors up to 42" BW. Available in 20°, 35°, and 45° trough angles with 4" and 5" rollers.

- [CEMA C Equal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-C-Equal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA C equal impact troughing idlers combine symmetrical three-roller design with rubber cushion rings. Available in 20°, 35°, and 45° trough angles with 4" and 5" impact-rated rollers. CEMA C rated for mining, cement, and aggregate loading zones.

## CEMA B Series – Light-Duty (4" & 5" Rollers, BW 18"–48")

- [CEMA B Unequal Troughing Idlers](https://www.zoomryhi.com/CEMA-B-Unequal-Troughing-Idlers-p.html)
ZOOMRY CEMA B unequal troughing idlers feature an offset L1/L2 roller configuration for light-duty carrying side support on conveyors up to 48" BW. Available in 20° and 35° trough angles with 4" and 5" rollers.

- [CEMA B Self-Aligning Troughing Idlers](https://www.zoomryhi.com/CEMA-B-Self-Aligning-Troughing-Idlers-p.html)
ZOOMRY CEMA B self-aligning troughing idlers provide light-duty automatic belt tracking correction on the carrying side via a pivot-mounted frame with side guide rollers. Available in 20°, 35°, and 45° trough angles with 4" and 5" rollers.

- [CEMA B Self-Aligning Return Idlers](https://www.zoomryhi.com/CEMA-B-Self-Aligning-Return-Idlers-p.html)
ZOOMRY CEMA B self-aligning return idlers automatically correct return belt misalignment with a pivot-mounted frame and side guide rollers. CEMA B rated for conveyors up to 48" BW. Available in 4" and 5" roller diameters.

- [CEMA B Rubber Discs Return Idlers-4&5 Diameter](https://www.zoomryhi.com/CEMA-B-Rubber-Discs-Return-Idlers-45-Diameter-p.html)
ZOOMRY CEMA B rubber disc return idlers feature alternating rubber discs for self-cleaning return side operation. Prevents sticky material buildup on return rollers in coal, clay, and overburden applications. Available in 4" and 5" roller diameters.

- [CEMA B Return Idlers-4 &5 Diameter](https://www.zoomryhi.com/CEMA-B-Return-Idlers-4-5-Diameter-p.html)
ZOOMRY CEMA B return idlers provide light-duty standard return side support with IP66 labyrinth sealing. Available in 4" and 5" diameter flat roller configurations for conveyors up to 48" BW.

- [CEMA B Flat Idlers-4 &5 Diameter](https://www.zoomryhi.com/CEMA-B-Flat-Idlers-4-5-Diameter-p.html)
ZOOMRY CEMA B flat idlers provide uniform full-width horizontal belt support with a single flat roller for light-duty flat carry sections and return spans. Available in 4" and 5" diameter configurations.

- [CEMA B Equal Troughing Idlers](https://www.zoomryhi.com/CEMA-B-Equal-Troughing-Idlers-p.html)
ZOOMRY CEMA B equal troughing idlers feature symmetrical three equal-length roller design for maximum carrying capacity on light-duty conveyors up to 48" BW. Available in 20°, 35°, and 45° trough angles with 4" and 5" rollers.

- [CEMA B Equal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-B-Equal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA B equal impact troughing idlers combine symmetrical three-roller design with rubber cushion rings for light-duty loading zone protection. Available in 20°, 35°, and 45° trough angles with 4" and 5" impact-rated rollers.

- [CAME B Discs Flat Idlers-4&5 Diameter](https://www.zoomryhi.com/CAME-B-Discs-Flat-Idlers-45-Diameter-p.html)
ZOOMRY CAME B discs flat idlers combine uniform flat belt support with rubber disc self-cleaning for light-duty applications. Available in 4" and 5" roller diameters for conveyors up to 48" BW.

- [CEMA B Unequal Impact Troughing Idlers](https://www.zoomryhi.com/CEMA-B-Unequal-Impact-Troughing-Idlers-p.html)
ZOOMRY CEMA B unequal impact troughing idlers combine offset L1/L2 roller geometry with rubber cushion rings for light-duty loading zone protection. Available in 20° and 35° trough angles with 4" and 5" impact-rated rollers.