Double-row Tapered Roller Bearings

Two single-row cups end one double cone; one double cup and two single-row cones.

Two single-row cups end one double cone; one double cup and two single-row cones.

Bearing Type

Features

Double-row

Outward

Load carrying capacity	Load direction
	Composite load
High-speed rotation
Accuracy
Low torque
Low noise
Rigidity
Permissible aligning
Aligning action
Separable inner ring / outer ring
Applicable to "fix side"
Applicable to "free side" only

Inward

Four-row

Load carrying capacity	Load direction
	Composite load
High-speed rotation
Accuracy
Low torque
Low noise
Rigidity
Permissible aligning
Aligning action
Separable inner ring / outer ring
Applicable to "fix side"
Applicable to "free side" only

	Radial load		Possibility for getting the characteristics
	Double-direction thrust load		Not applicable
	Single-direction thrust load		Applicable
			"can be applicable", but shaft thermal expansion must be absorbed.

(Note)
Adjustment is normally done using spacers. If spacers are not used, please contact NACHI for end-play specifications.

Automobile Transmissions.
Used in applications requiring large radial and axial loads and high rigidity. Example: Printing machines, Journal bearings for railway rolling stock, and truck wheels.