Dtii Belt Coonveyor Roller Parts Seals

Selecting a Roller, Confirming some parameters:
Roller Dia, Shaft Dia, Tube Thk, Length, Material.
Specifications:
(1)Belt width: 500 to 2, 400mm
(2)Roller D: 89/108/133/159/194mm
(3)Bearing size: 6204/6205/6305/6306ZZ
(4)Heaped capacity: 0.5 to 2.5 t/m³
Features:
(1) Roller idler: Material is carbon steel Q235B; D50-219mm; L190-3400mm
(2) Use: Roller is used in coal mining, wharf, power, metallurgy, building materials etc
(3) Shaft: Material is 20# or 45# steel; D20/25/30mm in bright drawn steel material
(4) Bearing: Single and double row deep groove ball bearing 2RZ and 2Z with C3 clearance
(5) Seals: Multi-labyrinth seals and outboard circlip as retention ca
(6) Painting: Common painting; Hot galvanized painting
Application:
Aggregate(crusher), Mining, Coal, Cement, Port,
Power, Forest, Construction, Recycling,
Shipping loading etc.