DTII Belt Conveyor Upper Parallel Idler for Mining Machinery

The DTII Belt Conveyor Upper Parallel Idler is a key component in the DTII conveyor system, an advanced version of the TD75 standard, widely used in mining, coal, ports, and other heavy industries. These idlers are flat, parallel rollers placed on the carrying side of the conveyor to support the belt and the weight of bulk materials like coal, ore, or aggregates. Unlike troughing idlers, upper parallel idlers provide a flat surface, typically used in sections where the belt needs to remain flat, such as near loading or discharge points, or in short conveyors.

They’re built to handle tough conditions, reduce belt wear, ensure smooth operation, and cut maintenance costs. This page explains what these idlers do, where they’re used, how to install them, what users think, and answers common questions, all in simple terms to help you decide if they’re right for your conveyor system.

DTII Belt Conveyor Upper Parallel 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	P	Q	d	Drawing No
	D	L	Drawing No	Bearing
500	89	600	DTⅡGP1107	4G204	740	800	175.5	170	130	M12	DTⅡ01C1411
650		750	DTⅡGP1109		890	950	190.5				DTⅡ02C1411
800		950	DTⅡGP1211	4G205	1090	1150	200.5				DTⅡ03C1412
	108		DTⅡGP2311	4G305			216				DTⅡ03C1423
1000	108	1150	DTⅡGP2312		1290	1350	246	220	170	M16	DTⅡ04C1423
	133		DTⅡGP3312				258.5				DTⅡ04C1433
1200	108	1400	DTⅡGP2313		1540	1600	281	260	200		DTⅡ05C1423
	133		DTⅡGP3313				293.5				DTⅡ05C1433
	159		DTⅡGP4313				310.5				DTⅡ05C1443
1400	108	1600	DTⅡGP2314		1740	1800	296	280	220		DTⅡ06C1423
	133		DTⅡGP3314				313.5				DTⅡ06C1433
	159		DTⅡGP4314				330.5				DTⅡ06C1443

DTII Belt Conveyor Upper Parallel Idler for Mining Machinery Features:

The DTII Upper Parallel Idler is designed to support the conveyor belt and materials on the carrying side, ensuring smooth and stable operation in rugged mining environments. Here’s what it offers:

1. Flat Roller Support

   • Features one or more flat, parallel rollers to support the belt in flat sections, ideal for loading, discharge, or short conveyor runs.

   • Ensures even weight distribution across the belt width, reducing stress and wear.

2. Durable Materials

   • Roller tubes made of Q235 steel (equivalent to SS400/JIS G3101/ASTM A36) for strength under heavy loads.

   • Shafts crafted from 45# steel (equivalent to DIN C45/JIS S45C/ASTM A1045) for precision and durability.

   • Optional HDPE or nylon coatings for reduced weight and enhanced durability.

3. High-Quality Bearings

   • Equipped with deep groove ball bearings (6204, 6205, 6305, etc., with C3 clearance, 2RZ/2Z seals) for smooth rotation and long life.

   • Triple labyrinth seals protect against dust, dirt, and moisture, perfect for mining conditions.

4. Low Noise and Vibration

   • Precision manufacturing and balance testing ensure quiet operation and minimal vibration.

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

5. Corrosion Resistance

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

   • Rubber or high-polymer coatings available for added durability in abrasive conditions.

6. Customizable Design

   • Diameters from 76mm to 219mm, lengths from 100mm to 3000mm, fitting belts 400mm to 2400mm wide.

   • Customizable frame designs and roller spacing to match specific conveyor layouts.

7. Standards Compliance

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

   • Tested for radial runout (≤0.5mm), axial displacement (≤1.2mm), and rotation resistance (≤3.5N) to ensure reliability.

DTII Belt Conveyor Impact Parallel Idler Applications:

The DTII Upper Parallel Idler is used on the carrying side of conveyors where the belt needs to remain flat, such as near loading or discharge points, or in short conveyors. It’s ideal for these industries:

1. Mining

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

   • Suits flat sections of long conveyors, like a 4 km system in Shandong, ensuring stable material transport.

2. Metallurgy

   • Supports belts handling raw or processed metals in smelting plants.

   • Corrosion-resistant coatings protect against abrasive or high-temperature materials.

3. Ports and Terminals

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

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

4. Construction

   • Supports belts carrying gravel, sand, or aggregates on job sites.

   • Works with mobile or fixed conveyors for versatile setups.

5. Power Plants

   • Supports belts handling coal or ash at loading or discharge points.

   • Built for dusty, high-load conditions.

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:

Installing DTII Upper Parallel Idlers is straightforward with these steps:

1. Check Specifications

   • Confirm the idler’s diameter, length, and frame design match your conveyor’s belt and load requirements.

   • Ensure the frame can support the idler’s weight and material load.

2. Position the Idlers

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

   • Use sturdy frames to secure the flat rollers parallel to the belt.

3. Align the Idlers

   • Set idlers perpendicular to the belt to ensure even support and prevent mistracking.

   • Use a laser level or string line to align the frame with adjacent idlers for consistent tracking.

4. Inspect Bearings and Seals

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

   • Avoid disturbing seals to maintain dust and water resistance.

5. Adjust Belt Tension

   • Set tension to keep the belt snug 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 light load to check idler performance and belt tracking.

   • Adjust the frame or roller position if the belt drifts or shows uneven wear.

Installation Tips

• Use trained technicians to meet safety and industry standards.

• Document installation details for maintenance records.

• Contact [Your Company Name] for expert setup assistance.

Maintenance Tips

Regular care keeps DTII Upper Parallel Idlers performing well:

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

• Lubricate Bearings: Apply lithium soap grease every 6 months to ensure smooth rotation.

• Clean Rollers: Use belt scrapers to remove material buildup, especially in sticky conditions.

• Check Alignment: Verify idlers remain perpendicular to prevent belt drift.

• Use OEM Parts: Replace with DTII-compliant parts to maintain performance.

• Avoid Damage: Do not strike the idler tube with heavy objects to prevent damage to bearings or seals.

Customer Feedback:

Here’s what users of DTII Upper Parallel Idlers say:

1. Australian Iron Ore Mine

   “The parallel rollers support our heavy loads perfectly. Belt life is up, and repairs are down.” – Tom Harris, Site Engineer

2. South African Port Terminal

   “The rust-resistant coatings are great for our coastal setup. These idlers need almost no upkeep.” – Thabo Mokoena, Logistics Manager

3. Brazilian Copper Mine

   “Our conveyor’s running 18% more reliably with these idlers. They’re tough and easy to maintain.” – Lucas Ferreira, Maintenance Supervisor

These reviews highlight EV’s reliable, high-quality idlers.

Related Questions (FAQs):

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

1. What’s a DTII Upper Parallel Idler?

A flat roller set that supports the conveyor belt on the carrying side in flat sections, used in mining to ensure stable material transport.

2. How does it support the belt?

Flat, parallel rollers provide even support across the belt width, reducing stress and wear in flat sections.

3. What’s it made of?

Q235 steel for tubes, 45# steel for shafts, with optional HDPE, nylon, or rubber coatings for durability.

4. How often should I maintain it?

Inspect every 3-6 months, lubricate the bearings, clean any buildup, and check the alignment. Don’t tamper with seals.

5. Can it be customized?

Yes, we offer various sizes, frame designs, and coatings to fit your conveyor.

6. Where’s it used?

Mining, metallurgy, ports, construction, and power plants for handling bulk materials like coal or ore.

7. How does it improve my conveyor?

It ensures stable belt support, reduces wear, and cuts maintenance for better efficiency and safety.