MDJY rice length grader is specially designed to separate one or two kinds of broken or shorter grains from whole grain by length with the indented cylinder.
Broken grains which are longer than half of whole grain are difficult to separate through sieving or thickness/width grader but can be picked out by length grader.
Product Features
1.With high degree of precision;It can ensure that no broken rice is in the whole rice and vice versa.
2.The cylinders can be used in parallel or in series according to real requirements.
3. The process can be observe through the inspection window.
4.The sieve tube can be easily replaced and operation is simple.
Working Principle
Take the principle that the whole rice and the broken rice have different lengths to separate the broken rice from the whole rice.
It is assembled with rice grading sieve in flexible technological combinations (either series connection or parallel connection of expansion cylinder) to realize the grading requirements that the whole rice does not contain broken rice.
The grains which are longer in length drop out of the indents before they reach the catch trough. The grains which remain in the indents are thrown into the catch trough.
Technical Parameters
Model | MDJY50*2 | MDJY50*3 | MDJY60/60 | MDJY60*2 |
Capacity(t/h) | 1.0-1.5 | 2.0-2.5 | 1.0-2 | 2.0-2.5 |
Power(kw) | 0.75*2 | 0.75*3 | 1.1 | 1.1*2 |
Upper roller size (mm) | 500*1800 | 500*1800 | 600*2000 | 600*2000 |
Lower roller size (mm) | 500*1800 | 500*1800 | / | 600*2000 |
Fragment in | ≤2 | ≤2 | ≤2 | ≤2 |
the whole | ||||
Crude rice in the processed product | ≤5 | ≤5 | ≤5 | ≤5 |
Overall dimension L*W*H (mm) | 2080*720*1650 | 2080*720*2450 | 2770*1000*950 | 2770*1000*1860 |
Model | MDJY60*3 | MDJY71/71 | MDJY71*2 | MDJY71*3 |
Capacity(t/h) | 3.0-3.5 | 1.5-1.8 | 4-4.2 | 4.5-5.5 |
Power(kw) | 1.1*3 | 1.5 | 1.5*2 | 1.5*3 |
Upper roller size(mm) | 600*2000 | 710*2500 | 710*2500 | 710*2500 |
Lower roller size(mm) | 600*2000 | / | 710*2500 | 710*2500 |
Fragment inthe whole | ≤2 | ≤2 | ≤2 | ≤2 |
Crude rice in the processed product | ≤5 | ≤5 | ≤5 | ≤5 |
Overall dimension L*W*H(mm) | 2770*1000*2760 | 3300*1000*1050 | 3300*1000*2000 | 3300*1000*3040 |




1,Standard export package or according to clients' requirement;
Built in 1937,as the first manufacturer of rice mill machine in China,Rizhao Stream(STR) mainly produces Grain Cleaner,Rice Mill,Rice Huller,Rice Grader,Rice Polisher,Rice Packing Machine,Grain Dryer,Grain Silo,Rice Parboiling Machine,Bucket Elevator, Crusher Machine...
STR is experienced in complete set of fully automatic rice milling equipment with daily output of 20-600 tons, wheat flour plant 5-500 tons per day, maize flour plant 5-500 tons per day.
Rizhao Stream(STR) is 'Famous brand of china machinery industry' and 'Shandong famous brand',with a more perfect quality management system.Our company won 'two grade national enterprise' honor in 1989; Won 'Shandong Quality Management Award' in 1991; Passed ISO9000 in 1997; Passed 'CCC 'in 2006; Recently,won 'Top ten industrial enterprises all the region ' 'Top ten integrity taxpayers of RIZHAO City ', and so on.

1, Relatively cheaper price in grain processing field
2, High quality steel as raw material which is thicker
3, With more than 80 years experience in grain machine,our engineers are professional in design
4 , Unique design for your rice/maize/wheat milling plant
5, Good after sale service.We will answer you in 2 hours and offer solution in one day
6, Better service for spare parts
Q1:Who are you?
A1:We are leading manufacturer of rice/maize/wheat milling machine.
First built in 1937 as government enterprise.
Q2:What can you do for us?
A2:We can supply higher quality machines and instruct the installation & training.Service is life long.
Q3:Why would I buy from your factory?
A3:Using thicker steel,high quality spare parts,our machines can work for 10 years at least.
Q4:How do you ensure the quality of your machines?
A4:Most of our QC workers have more than 20 years experience.
All machines are tested before leaving factory.
Q5:What is your leading time and delivering time?
A5:Normally it is 25 working days.
For big project,it is about 2 months.For small machines,in 3~7 days.
We will confirm the exact delivering date when contract.
Q6:What size of workshop we should build?How many land do we need?
A6:Once you confirm the machine model,our engineers will design the layout for you accordingly.
Q7:What is your warranty?
A7:It is at least 12 months or longer.
