1. Product Overview

ZOOMRY CEMA E equal impact troughing idlers are extra heavy-duty loading zone components combining symmetrical three-roller design with reinforced shock-absorbing rollers. Built to CEMA E standards for mining crusher discharge and transfer points, these Conveyor idlers protect belts from falling material damage — absorbing up to 80% of impact energy through rubber cushion rings while maintaining the uniform trough support that equal roller design provides.

Equal impact troughing idlers combine the best of both designs: the maximum load capacity of equal troughing idlers with the belt protection of impact-rated rollers. The three equal-length rollers with rubber cushion rings distribute impact forces symmetrically across the Conveyor Belt, making them the preferred choice for loading zones where material size is uniform and maximum impact absorption is required.

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2. Equal Impact vs Unequal Impact: Key Differences

Feature	CEMA E Equal Impact (E11)	CEMA E Unequal Impact (E3)
Roller Configuration	3 equal-length impact rollers (symmetrical)	L1 (long center) + L2 (short wings), impact-rated
Impact Distribution	Uniform across all three rollers	Concentrated on longer center roller
Belt Protection	Symmetrical — ideal for uniform materials	Offset — better for irregular materials
Best For	Standard crusher discharge, uniform material loading	Overburden, mixed-size material loading points

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3. Key Features

Symmetrical Impact Protection — Three equal-length rollers with rubber cushion rings distribute impact forces evenly, reducing belt stress by up to 80% at loading zones.

CEMA E Extra Heavy-Duty Rating — 6-inch and 7-inch diameter impact rollers with reinforced frames for belt widths up to 96 inches at 20°, 35°, and 45° trough angles.

Rubber Cushion Rings — Impact-absorbing rubber rings on all three rollers dissipate energy from falling material, preventing belt puncture and carcass damage in cement and aggregate crusher discharge applications.

Advanced Labyrinth Sealing — Multi-stage seals protect bearings from fine dust generated at transfer points, maintaining rotational resistance ≤2N.

Loading Zone Specialist — Reduces belt puncture incidents by over 60% compared to standard troughing idlers at crusher discharge and high-drop transfer points.

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4. Application Scenarios

Primary Crusher Discharge — Run-of-mine ore from jaw or gyratory crushers in mining operations. Equal impact idlers provide symmetrical protection where material size is relatively uniform after primary crushing.

Secondary Crushing Transfer — Cone crusher and impact crusher discharge conveyors in aggregate quarry circuits where material is well-graded and impact is consistent across the belt width.

Conveyor-to-Conveyor Transfer — High-drop transfer chutes in coal handling and port terminals where material free-falls onto the receiving belt. Equal impact idlers provide maximum support across the full belt width.

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5. Dimensions – Equal Impact Troughing 20° / 35° / 45°

ZOOMRY CEMA E equal impact troughing idlers follow CEMA E standard dimensions with rubber cushion rings on all three rollers. Available in 6-inch and 7-inch diameters for belt widths from 36 to 96 inches at all three standard trough angles:

				6" Roller			7" Roller
Angle	BW	A	B	L	H1	H2	W	H1	H2	W	E	F	K
20°	36	45	47	13 1/4	8 5/8	13 5/16	39 7/16	9 1/8	13 3/4	39 1/8	6	9 1/2	1/2
	42	51	53	15 7/16	9	14 7/16	45 3/4	9 1/2	14 7/8	45 7/16	7 1/2	9 1/2	5/8
	48	57	59	17 1/16	9	14 7/8	50 5/8	9 1/2	15 3/8	50 5/16	7 1/2	9 1/2	5/8
	54	63	65	19 1/16	9	15 3/4	56 7/16	9 1/2	16 1/8	56 1/16	9	11	5/8
	60	69	71 1/2	21 1/16	9	16 1/2	62 3/16	9 1/2	16 3/4	61 7/8	9	11	5/8
	72	81	83 1/2	26	9 1/2	18 3/8	76 3/16	10	18 7/8	75 13/16	9	11	5/8
	84	93	95 1/2	29 1/2	11 3/4	22 1/16	88 1/16	12 1/4	22 3/8	88 1/2	12	14	3/4
	96	105	107 1/2	33 1/2	11 3/4	23 7/16	99 5/8	12 1/4	23 3/4	100 1/16	12	14	3/4
35°	36	45	47	13 1/4	8 5/8	16 3/8	35 15/16	9 1/8	16 13/16	35 7/16	6	9 1/2	1/2
	42	51	53	15 7/16	9	18 1/16	41 3/4	9 1/2	18 7/16	41 3/16	7 1/2	9 1/2	5/8
	48	57	59	17 1/16	9	18 7/8	45 13/16	9 1/2	19 1/4	45 1/4	7 1/2	9 1/2	5/8
	54	63	65	19 1/16	9	20	51 1/8	9 1/2	20 7/16	50 1/2	9	11	5/8
	60	69	71 1/2	21 1/16	9	21 3/16	56 3/8	9 1/2	21 9/16	55 13/16	9	11	5/8
	72	81	83 1/2	26	9 1/2	24 7/16	69 9/16	10	24 7/8	69 1/16	9	11	5/8
	84	93	95 1/2	29 1/2	11 3/4	29 1/16	79 11/16	12 1/4	29 3/8	79 1/8	12	14	3/4
	96	105	107 1/2	33 1/2	11 3/4	31 1/8	90 5/8	12 1/4	31 7/16	85 1/16	12	14	3/4
45°	36	45	47	13 1/4	8 5/8	18 3/16	33 1/8	9 1/8	18 9/16	32 5/16	6	9 1/2	1/2
	42	51	53	15 7/16	9	20 1/8	38 7/16	9 1/2	20 1/2	37 11/16	7 1/2	9 1/2	5/8
	48	57	59	17 1/16	9	21 3/16	42 1/16	9 1/2	21 9/16	41 3/8	7 1/2	9 1/2	5/8
	54	63	65	19 1/16	9	22 7/8	46 15/16	9 1/2	23	46 3/16	9	11	5/8
	60	69	71 1/2	21 1/16	9	24 1/16	51 3/4	9 1/2	24 3/8	51	9	11	5/8
	72	81	83 1/2	26	9 1/2	28	63 15/16	10	28 5/16	63 1/4	9	11	5/8
	84	93	95 1/2	29 1/2	11 3/4	32 3/4	72 13/16	11 3/4	33 1/16	73 1/4	12	14	3/4
	96	105	107 1/2	33 1/2	11 3/4	35 9/16	82 1/4	11 3/4	35 7/8	82 11/16	12	14	3/4

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