
The DTII Belt Conveyor Roller is a critical component of the DTII conveyor system, an advanced evolution of the TD75 standard, widely used in mining, coal, ports, and other heavy industries. These rollers, also known as idlers, are positioned along the conveyor to support the belt and the material it carries, ensuring smooth, efficient, and reliable transportation. Available in various types—carrying rollers, return rollers, impact rollers, and self-aligning rollers—they serve specific functions like supporting the belt, absorbing material impact, or correcting misalignment.
Designed for durability in harsh mining environments, DTII rollers reduce belt wear, minimize downtime, and enhance conveyor performance. This page covers what DTII rollers do, where they’re used, how to install them, what users say, and answers common questions, all in plain language to help you decide if they’re right for your conveyor system.
Unit: mm| D | d | Bearing model | L | b | h | f | Weight of rotating parts (kg) | Drawing No |
| 89 | 20 | 4G204 | 200 | 14 | 6 | 14 | 2.08 | DTⅡGP1101 |
| 250 | 2.15 | DTⅡGP1102 | ||||||
| 315 | 2.58 | DTⅡGP1103 | ||||||
| 465 | 3.87 | DTⅡGP1105 | ||||||
| 600 | 4.78 | DTⅡGP1107 | ||||||
| 750 | 5.79 | DTⅡGP1109 | ||||||
| 950 | 7.15 | DTⅡGP1111 | ||||||
| 25 | 4G205 | 18 | 8 | 17 | 7.23 | DTⅡGP1211 | ||
| 108 | 20 | 4G204 | 315 | 14 | 6 | 14 | 3.46 | DTⅡGP2103 |
| 465 | 4.7 | DTⅡGP2105 | ||||||
| 950 | 8.71 | DTⅡGP2111 | ||||||
| 25 | 4G205 | 315 | 18 | 8 | 17 | 3.53 | DTⅡGP2203 | |
| 380 | 4.07 | DTⅡGP2204 | ||||||
| 465 | 4.77 | DTⅡGP2205 | ||||||
| 600 | 5.89 | DTⅡGP2207 | ||||||
| 700 | 6.72 | DTⅡGP2208 | ||||||
| 950 | 8.74 | DTⅡGP2211 | ||||||
| 1150 | 8.4 | DTⅡGP2212 | ||||||
| 1400 | 10.03 | DTⅡGP2213 | ||||||
| 4G305 | 380 | 4.19 | DTⅡGP2304 | |||||
| 465 | 4.89 | DTⅡGP2305 | ||||||
| 530 | 5.43 | DTⅡGP2306 | ||||||
| 600 | 6.01 | DTⅡGP2307 | ||||||
| 700 | 6.84 | DTⅡGP2308 | ||||||
| 800 | 7.67 | DTⅡGP2310 | ||||||
| 950 | 8.91 | DTⅡGP2311 | ||||||
| 1150 | 10.56 | DTⅡGP2312 | ||||||
| 1400 | 12.76 | DTⅡGP2313 | ||||||
| 1600 | 14.42 | DTⅡGP2314 | ||||||
| 30 | 4G306 | 465 | 22 | 5.35 | DTⅡGP2405 | |||
| 530 | 5.89 | DTⅡGP2406 | ||||||
| 800 | 8.12 | DTⅡGP2410 | ||||||
| 1400 | 13.08 | DTⅡGP2413 | ||||||
| 1600 | 14.73 | DTⅡGP2414 |
| D | d | Bearing model | L | b | h | f | Weight of rotating parts (kg) | Drawing No |
| 133 | 25 | 4G205 | 380 | 18 | 8 | 17 | 6.04 | DTⅡGP3204 |
| 465 | 7.12 | DTⅡGP3205 | ||||||
| 600 | 8.84 | DTⅡGP3207 | ||||||
| 700 | 10.11 | DTⅡGP3208 | ||||||
| 1150 | 15.80 | DTⅡGP3212 | ||||||
| 1400 | 18.98 | DTⅡGP3213 | ||||||
| 4G305 | 380 | 6.3 | DTⅡGP3304 | |||||
| 465 | 7.38 | DTⅡGP3305 | ||||||
| 530 | 8.21 | DTⅡGP3306 | ||||||
| 600 | 9.1 | DTⅡGP3307 | ||||||
| 700 | 10.37 | DTⅡGP3308 | ||||||
| 800 | 11.64 | DTⅡGP3310 | ||||||
| 1150 | 16.09 | DTⅡGP3312 | ||||||
| 1400 | 19.28 | DTⅡGP3313 | ||||||
| 1600 | 21.83 | DTⅡGP3314 | ||||||
| 30 | 4G306 | 465 | 22 | 8.13 | DTⅡGP3405 | |||
| 530 | 8.96 | DTⅡGP3406 | ||||||
| 800 | 12.4 | DTⅡGP3410 | ||||||
| 1400 | 18.35 | DTⅡGP3413 | ||||||
| 1600 | 20.9 | DTⅡGP3414 | ||||||
| 159 | 25 | 4G205 | 465 | 18 | 9.46 | DTⅡGP4205 | ||
| 700 | 13.45 | DTⅡGP4208 | ||||||
| 1400 | 25.46 | DTⅡGP4213 | ||||||
| 4G305 | 465 | 9.64 | DTⅡGP4305 | |||||
| 530 | 10.68 | DTⅡGP4306 | ||||||
| 700 | 13.6 | DTⅡGP4308 | ||||||
| 800 | 15.32 | DTⅡGP4310 | ||||||
| 1400 | 25.82 | DTⅡGP4313 | ||||||
| 1600 | 29.25 | DTⅡGP4314 | ||||||
| 30 | 4G306 | 465 | 22 | 10.53 | DTⅡGP4405 | |||
| 530 | 11.64 | DTⅡGP4406 | ||||||
| 800 | 16.27 | DTⅡGP4410 | ||||||
| 1400 | 26.56 | DTⅡGP4413 | ||||||
| 1600 | 29.99 | DTⅡGP4414 |
The DTII Conveyor Roller is designed to support, guide, and protect conveyor belts in mining operations, ensuring smooth material transport and minimal maintenance. Here’s what makes it stand out:
Multiple Roller Types
Carrying Rollers: Support the loaded belt, typically trough-shaped (20°, 35°, 45°) to handle bulk materials like coal or ore.
Return Rollers: Support the empty belt on the return side, preventing sagging and stretching.
Impact Rollers: Absorb shock at loading points with rubber rings or coatings to minimize belt damage.
Self-aligning Rollers: Pivot to correct belt misalignment, reducing edge wear.
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 stainless steel, rubber, or HDPE coatings for corrosion and wear resistance in harsh environments.
High-Quality Bearings
Equipped with deep groove ball bearings (6204, 6205, 6305, etc., with C3 clearance, 2RZ/2Z seals) for smooth rotation and extended lifespan.
Triple labyrinth seals protect against dust, dirt, and moisture, ideal for mining conditions.
Low Noise and Vibration
Precision manufacturing and balance testing ensure quiet operation and minimal vibration.
Reduces wear on the belt and conveyor frame, prolonging system life.
Corrosion Resistance
Options for zinc plating, baking paint, or epoxy coatings to resist rust in environments like coastal ports.
Stainless steel or HDPE options for added durability in abrasive or chemical conditions.
Customizable Design
Roller diameters from 76mm to 219mm, lengths from 100mm to 3000mm, fitting belts 500mm to 2400mm wide.
Customizable trough angles, coatings, and frame designs to suit specific conveyor layouts.
Standards Compliance
Meets DTII, DTII(A), CEMA (B, C, D, E), JIS, and ISO 9001:2008 standards for quality and safety.
Tested for radial runout (≤0.5mm), axial displacement (≤1.2mm), and rotation resistance (≤3.5N) to ensure reliability.

The DTII Conveyor Roller is used in various conveyor systems to support and guide belts, particularly in high-tension or long-distance setups. It’s ideal for these industries:
Mining
Supports belts carrying coal, iron ore, copper, or aggregates in underground or open-pit mines.
Impact rollers reduce belt damage at loading points; return rollers prevent sagging on long systems like a 10 km conveyor in Inner Mongolia.
Metallurgy
Supports belts handling raw or processed metals in smelting plants.
Corrosion-resistant coatings withstand abrasive or high-temperature environments.
Ports and Terminals
Supports belts during loading/unloading of coal, grain, or aggregates.
Rust-resistant coatings are ideal for salty coastal conditions.
Construction
Supports belts carrying gravel, sand, or aggregates on job sites.
Works with mobile or fixed conveyors for flexible setups.
Power Plants
Supports belts handling coal or ash in fuel or waste systems.
Designed for dusty, high-tension environments.


| 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 | 218 |
Address
Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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