A ready-reference-sheet of selection criteria to consult with the mixing mill supplier and have an intelligent discussion with your machinery salesman.

1. www.rubbermachineryworld.com Two-Roll Mill Selection Questionnaire Page 1 of 4
QUESTIONNAIRE FOR 2-ROLL MILL REQUIREMENT
Criterion Please Answer Descriptively if needed
Production Requirement: ___________________ Tons/Hour ; ___________________ of 8 hour Shifts/Day
What is your expectation
from this Mill?
(Please tick appropriate boxes)
Warming/Pre-heating (before feeding into next stage)
Mixing (for thorough blending of compound)
Dump Mill (below mixer/kneader)
Sheeting out
Refiner Mill
Cracker Mill (with corrugated rolls for breaking cold rubber sheet)
Others
If Others, please specify:
Mill Size: ___________________ MM x ___________________ MM (Roll Diameter x Length)

2. www.rubbermachineryworld.com Two-Roll Mill Selection Questionnaire Page 2 of 4
Criterion Please Answer Descriptively if needed
Type of Mill:
(Please tick)
Both Rolls Plain One Roll Corrugated Both Rolls Corrugated
Roll Type:
Both Rolls Centrally Cored/Bored
Only one Roll Peripherally Drilled
Both Rolls Peripherally Drilled
Friction Ratio Required
(Optional)
Nip Gap Adjustment Manual Motorized Hydraulic
Mill Speed: (RPM)
(Please fill and tick)
___________________ RPM; or Roll Surface Speed of ______________ MPM
Variable Speed (VFD) Motor required for different speed
Mill Stock Guides
Fixed Pneumatic Movement
Motorized Movement Hydraulic Movement

3. www.rubbermachineryworld.com Two-Roll Mill Selection Questionnaire Page 3 of 4
Criterion Please Answer Descriptively if needed
Mill Gearbox / Reducer
(Please tick)
Unidrive (Gearbox to have single input shaft/double output shaft)
Semi Unidrive (Connecting Gear on Mill Rolls)
Independently Driven Rolls with Variable Friction Ratio
If you have any Service Factor (SF) specifications, note here or discuss
with the manufacturer without fail.
Accessories/Features
Required
Temperature Control Unit Stock Blender
LVDT for nip gap measurement Emergency Stop features
Others
If Others, please specify:
Details on any major
components that are of
abrasive or heat
sensitive nature in your
recipe

4. www.rubbermachineryworld.com Two-Roll Mill Selection Questionnaire Page 4 of 4
Criterion Please Answer Descriptively if needed
Any other inputs you
wish to share on your
need.
(For example, brands of electrical,
hydraulic components, or
lubrication requirements, etc -
Optional)