DTII Belt Conveyor Trough Idler for Mining Machinery

The DTII Belt Conveyor Trough Idler is a critical component in the DTII conveyor system, an updated Chinese standard based on the TD75 design, widely used in mining, coal, ports, and other industries. These idlers are sets of rollers arranged in a “U” shape to support the conveyor belt on the load-carrying side, forming a trough that holds bulk materials like coal, ore, or gravel securely.

They reduce spillage, support heavy loads, and keep the belt stable during transport. Built for tough conditions, they minimize belt wear and maintenance. This page explains what trough idlers do, where they’re used, how to install them, what customers say, and answers common questions, all in plain language to help you decide if they’re right for your operation.

DTII Belt Conveyor Trough Idler for Mining Machinery Dimensions:

Explanation: The fasteners connected to the intermediate frame are included in this assembly drawing.

Unit: mm

Belt width B	Roller				A	E	H1	H	H2	P	Q	d	Drawing No
	D	L	Drawing No	Bearing
500	89	200	DTⅡGP1101	4G204	740	800	135.5	220	300	170	130	M12	DTⅡ01C0111
650		250	DTⅡGP1102		890	950		235	329				DTⅡ02C0111
800		315	DTⅡGP1103		1090	1150		245	366				DTⅡ03C0111
	108		DTⅡGP2103				146	270	385				DTⅡ03C0121
			DTⅡGP2203	4G205									DTⅡ03C0122
1000		380	DTⅡGP2204		1290	1350	159	300	437	220	170	M16	DTⅡ04C0122
			DTⅡGP2304	4G305									DTⅡ04C0123
	133		DTⅡGP3204	4G205			173.5	325	462				DTⅡ04C0132
			DTⅡGP3304	4G305									DTⅡ04C0133
1200	108	465	DTⅡGP2205	4G205	1540	1600	176	335	503	260	200	M16	DTⅡ05C0122
			DTⅡGP2305	4G305									DTⅡ05C0123
			DTⅡGP2405	4G306									DTⅡ05C0124
	133		DTⅡGP3205	4G205			190.5	360	528				DTⅡ05C0132
			DTⅡGP3305	4G305									DTⅡ05C0133
			DTⅡGP3405	4G306									DTⅡ05C0134
	159		DTⅡGP4205	4G205			207.5	390	557				DTⅡ05C0142
			DTⅡGP4305	4G305									DTⅡ05C0143
			DTⅡGP4405	4G306									DTⅡ05C0144
1400	108	530	DTⅡGP2306	4G305	1740	1800	184	350	548	280	220	M16	DTⅡ06C0123
			DTⅡGP2406	4G306									DTⅡ06C0124
	133		DTⅡGP3306	4G305			198.5	380	573				DTⅡ06C0133
			DTⅡGP3406	4G306									DTⅡ06C0134
	159		DTⅡGP4306	4G305			215.5	410	603				DTⅡ06C0143
			DTⅡGP4406	4G306									DTⅡ06C0144

Explanation: The fasteners connected to the intermediate frame are included in this assembly drawing.

Unit: mm

Belt width B	Roller				A	E	H1	H	H2	P	Q	d	Drawing No
	D	L	Drawing No	Bearing
500	89	200	DTⅡGP1101	4G204	740	800	135.5	220	328	170	130	M12	DTⅡ01C0211
650		250	DTⅡGP1102	4G204	890	950		235	364				DTⅡ02C0211
800		315	DTⅡGP1103	4G204	1090	1150		245	410				DTⅡ03C0211
	108		DTⅡGP2203	4G205			146	270	427				DTⅡ03C0222
1000		380	DTⅡGP2304	4G305	1290	1350	159	300	487	220	170	M16	DTⅡ04C0223
	133		DTⅡGP3304	4G305			173.5	325	515				DTⅡ04C0233
1200	108	465	DTⅡGP2305	4G305	1540	1600	176	335	564	260	200		DTⅡ05C0223
	133		DTⅡGP3405	4G306			190.5	360	592				DTⅡ05C0234
	159		DTⅡGP4405	4G306			207.5	390	618				DTⅡ05C0244
1400	108	530	DTⅡGP2306	4G305	1740	1800	184	350	618	280	220		DTⅡ06C0223
	133		DTⅡGP3406	4G306			198.5	380	646				DTⅡ06C0234
	159		DTⅡGP4406	4G306			215.5	410	672				DTⅡ06C0244

Explanation: The fasteners connected to the intermediate frame are included in this assembly drawing.

Unit: mm

Belt width B	Roller				A	E	H1	H	H2	ε	P	Q	d	Drawing No
	D	L	Drawing No	Bearing
500	89	200	DTⅡGP1101	4G204	740	800	135.5	220	300	1°30′	170	130	M12	DTⅡ01C0311
650		250	DTⅡGP1102	4G204	890	950		235	329	1°26′				DTⅡ02C0311
800		315	DTⅡGP1103	4G204	1090	1150		245	366	1°20′				DTⅡ03C0311
	108		DTⅡGP2103	4G204			146	270	385					DTⅡ03C0321
			DTⅡGP2203	4G205										DTⅡ03C0322
1000		380	DTⅡGP2204	4G205	1290	1350	159	300	437	1°23′	220	170	M16	DTⅡ04C0322
			DTⅡGP2304	4G305										DTⅡ04C0323
	133		DTⅡGP3204	4G205			173.5	325	462					DTⅡ04C0332
			DTⅡGP3304	4G305										DTⅡ04C0333
1200	108	465	DTⅡGP2205	4G205	1540	1600	176	335	503		260	200		DTⅡ05C0322
			DTⅡGP2305	4G305										DTⅡ05C0323
			DTⅡGP2405	4G306										DTⅡ05C0324
	133		DTⅡGP3205	4G205			190.5	360	528					DTⅡ05C0332
			DTⅡGP3305	4G305										DTⅡ05C0333
			DTⅡGP3405	4G306										DTⅡ05C0334
	159		DTⅡGP4205	4G205			207.5	390	557	1°22′				DTⅡ05C0342
			DTⅡGP4305	4G305										DTⅡ05C0343
			DTⅡGP4405	4G306										DTⅡ05C0344
1400	108	530	DTⅡGP2306	4G305	1740	1800	184	350	548	1°25′	280	220		DTⅡ06C0323
			DTⅡGP2406	4G306										DTⅡ06C0324
	133		DTⅡGP3306	4G305			198.5	380	573					DTⅡ06C0333
			DTⅡGP3406	4G306										DTⅡ06C0334
	159		DTⅡGP4306	4G305			217.5	410	603					DTⅡ06C0343
			DTⅡGP4406	4G306			215.5							DTⅡ06C0344

DTII Belt Conveyor Trough Idler for Mining Machinery Features:

The DTII Trough Idler is designed to support conveyor belts and carry bulk materials efficiently in tough mining environments. Here’s what it offers:

1. Trough Design for Stability

   • Features three rollers: a horizontal center roller and two wing rollers angled at 20°, 35°, or 45° to form a “U” shape.

   • The trough shape holds materials securely, reducing spillage and stabilizing the belt.

2. Durable Materials

   • Roller tubes made from Q235 steel (equivalent to SS400/JIS G3101/ASTM A36) for strength and durability.

   • Shafts use 45# steel (equivalent to DIN C45/JIS S45C/ASTM A1045) for reliable performance under heavy loads.

3. High-Quality Bearings

   • Equipped with deep groove ball bearings (C3 clearance, 2RZ/2Z seals) for smooth rotation and long life.

   • Triple labyrinth seals protect against dust, dirt, and water, ideal for mining conditions.

4. Low Noise and Vibration

   • Precision manufacturing and balance testing ensure quiet, smooth operation.

   • Reduces wear on the belt and conveyor frame, extending system lifespan.

5. Corrosion Resistance

   • Options for baking paint, zinc plating, or epoxy coatings to fight rust in harsh environments like ports.

   • Rubber-lined or high-polymer options available for extra durability in abrasive conditions.

6. Customizable Sizes

   • Diameters from 50mm to 219mm, lengths from 190mm to 3400mm, fitting belts 500mm to 2400mm wide.

   • Custom trough angles (20°, 35°, 45°) and frame designs to match specific conveyor needs.

7. Meets Industry Standards

   • Built to DTII, DTII(A), CEMA (B, C, D, E), and ISO 9001:2015 standards for quality and safety.

   • Tested for runout, balance, and load capacity to ensure reliability.

DTII Belt Conveyor Trough Idler Applications:

The DTII Drive Pulley is used where conveyors need reliable power to move bulk materials. It’s a fit for these industries:

1. Mining

   • Powers belts moving coal, iron ore, copper, or bauxite in underground or open-pit mines.

   • Handles high-capacity systems, like a 5 km coal conveyor in Shanxi.

2. Metallurgy

   • Drives belts transporting raw or processed metals in smelting plants.

   • Works in high-temperature environments with heat-resistant coatings.

3. Ports and Terminals

   • Powers belts for loading/unloading coal, grain, or aggregates.

   • Rust-resistant coatings are ideal for salty coastal areas.

4. Construction

   • Drives belts moving gravel, sand, or aggregates on job sites.

   • Fits both mobile and fixed conveyor setups for flexibility.

5. Power Plants

   • Powers belts handling coal or ash for combustion or disposal.

   • Built for dusty, high-load conditions.

A coal mine in Shandong, China, used DTII Drive Pulleys on a 4 km conveyor. They reduced belt slippage by 20% and cut maintenance costs by 15%, keeping the system running reliably.

DTII Belt Conveyor:

Purpose and Scope of Use:

DTII、DTII(A) fixed belt conveyors. Their main parameters, transmission power, and tension calculation methods adopt ISO international standards, and are widely used in various industries.
The material is transported by a single or multiple unit synthetic transportation system.
This conveyor is suitable for working in temperatures ranging from -25°C to 40°C.

Product Features:

◆ Conveying materials is below 2.5t/m3
◆ Can be divided into 500, 650, 800, 1000, 1200, 1400, 1600, 1800, 2000、2200, 2400
◆ Can be divided into：0.8, 1.0, 1.25, 1.6, 2.0, 2.5, 3.15、4.0, (4.5), 5.0, (5.6), 6.5

 

Belt  width  (mm)	0.8	1.0	1.25	1.6	2.0	2.5	3.15	4	(4.5)	5.0	(5.6)	6.5
500	69	87	108	139	174	217
650	127	159	198	254	318	397
800	198	248	310	397	496	620	781
1000	324	405	507	648	811	1014	1278	1622
1200		593	742	951	1188	1486	1872	2377	2674	2971
1400		825	1032	1321	1652	2065	2602	3304	3718	4130
1600					2186	2733	3444	4373	4920	5465	6122
1800					2795	3494	4403	5591	6291	6989	7829	9083
2000					3470	4338	5466	6941	7808	8676	9717	11277
2200							6843	8690	9776	10863	12166	14120
2400							8289	10526	11842	13158	14737	17104

Note:
1. The conveying capacity in the table is calculated based on horizontal transportation, with a dynamic stacking angle of 20° and a roller groove angle of 35°.
2. The belt speeds of 4.5m/s and 5.6m/s in the table are non-standard values and are generally not recommended for use.

Installation Guidelines:

The DTII Trough Idler is used where conveyor belts carry bulk materials, especially in high-volume or abrasive conditions. It’s a fit for these industries:

1. Mining

   • Supports belts moving coal, iron ore, copper, or bauxite in underground or open-pit mines.

   • Ideal for high-capacity systems, like a 5 km coal conveyor in Shanxi.

2. Metallurgy

   • Carries raw or processed metals in smelting plants.

   • Handles high-temperature or abrasive materials with protective coatings.

3. Ports and Terminals

   • Supports belts for loading/unloading coal, grain, or aggregates.

   • Rust-resistant options are perfect for salty coastal environments.

4. Construction

   • Carries gravel, sand, or aggregates on job sites.

   • Fits mobile or fixed conveyors for flexible layouts.

5. Power Plants

   • Supports belts handling coal or ash for combustion or disposal.

   • Built for dusty, high-load conditions.

A coal mine in Shandong, China, installed DTII Trough Idlers on a 4 km conveyor. They reduced material spillage by 25% and maintenance costs by 20%, improving system reliability and output.

Installation Guidelines

Installing DTII Trough Idlers is straightforward with these steps:

1. Check Specs

   • Confirm the idler’s diameter, length, and trough angle (20°, 35°, or 45°) match your conveyor’s belt and load.

   • Ensure the conveyor frame is level and sturdy to support the idlers.

2. Mount the Idlers

   • Install on the load-carrying side, typically spaced 3-5 feet apart based on load and belt width.

   • Use trough-shaped metal frames to secure the center and wing rollers.

3. Align Properly

   • Set idlers perpendicular to the belt to ensure even load distribution and avoid mistracking.

   • Use a laser or level to align the frame and rollers precisely.

4. Inspect Bearings and Seals

   • Verify bearings are greased with lithium soap grease and triple labyrinth seals are intact.

   • Don’t disturb seals—they protect against dust and water.

5. Set Belt Tension

   • Adjust tension to prevent sagging without overloading the idlers. Use:
     [ T = \frac{P_p \cdot 1000}{v} ] where (T) is tension (Newtons), (P_p) is power (kilowatts), and (v) is belt speed (meters/second).

6. Test the System

   • Run the conveyor at low speed with a small load to check idler alignment and belt tracking.

   • Adjust frame or roller angles if the belt drifts or spills material.

Installation Tips

• Use trained workers to meet safety and industry standards.

• Record setup details for maintenance reference.

• Contact us for installation support.

Maintenance Tips

Regular care keeps DTII Trough Idlers running smoothly:

• Inspect Regularly: Check rollers, bearings, and frames every 3-6 months for wear or damage.

• Grease Bearings: Use lithium soap grease every 6 months to maintain smooth rotation.

• Clean the Belt: Use scrapers to prevent material buildup on rollers.

• Check Alignment: Ensure idlers remain perpendicular to avoid belt drift.

• Use OEM Parts: Replace with DTII-compliant parts for best performance.

Customer Feedback:

Here’s what users of DTII Trough Idlers say:

1. Australian Iron Ore Mine

   “The idlers handle heavy loads and keep the belt stable. They’ve saved us a lot on cleanup and belt replacements.” – Emma Wilson, Site Engineer

2. South African Port Terminal

   “The rust-resistant coatings are perfect for our coastal setup. These idlers need almost no upkeep.” – Sipho Mbele, Logistics Manager

3. Chilean Copper Mine

   “Our conveyor’s uptime is up 15% with these trough idlers. They’re tough and easy to maintain.” – Carlos Rivera, Maintenance Supervisor

These comments show Ever-Power delivers reliable idlers that customers trust.

Related Questions (FAQs):

Got questions? Here are clear answers with keywords to help you find us:

1. What’s a DTII Trough Idler?

A set of rollers forming a “U” shape to support the conveyor belt and carry bulk materials in mining, reducing spillage and wear.

2. How does it prevent material spillage?

The trough shape, formed by angled wing rollers (20°, 35°, or 45°), holds materials securely, keeping them centered on the belt.

3. What’s it made of?

Q235 steel for tubes, 45# steel for shafts, with optional rubber lining or rust-proof coatings like zinc or epoxy.

4. How often should I maintain it?

Check every 3-6 months, grease bearings, clean buildup, and inspect alignment. Don’t touch the seals.

5. Can it be customized?

Yes, we offer different sizes, trough angles, and coatings.