INAKWVE 15 BG3V2Linear Recirculating Ball Bearing Carriage and 220 mm Guideway – Size 15, Four-Row, G3 Accuracy, V2 Preload

Product Description

What this part is

INA KWVE15-B-G3-V2 linear recirculating ball bearing and guideway assembly, size 15, supplied on a 220 mm length of profile rail. Four rows of recirculating balls run in the carriage between the rail and the carrier, taking load from any direction and resisting moments about all three axes. Dynamic Load Rating: 7,200 N. Static Load Rating: 14,500 N. Rolling Elements: Ball. Number Of Rows: 4. Rail width: 15 mm. Carriage width: 47 mm. System height: 24 mm. Overall length of carriage: 61.2 mm. Carrier length: 39.8 mm. Item Weight: 0.2 kg (0.44 lb) for the carriage. Series: KWVE. Base Number: KWVE15.

Decoding the designation

KWVE — Schaeffler linear recirculating ball bearing carriage running on a profile guideway.

15 — size code; 15 mm rail width.

B — standard carriage length and section within the size.

G3 — accuracy class 3 in Schaeffler’s profile rail accuracy ladder.

V2 — preload class 2, light preload. Preload removes the clearance between carriage and rail, which raises stiffness and repeatability.

What these specs mean in practice

Static moment ratings: 150 Nm about the X axis, 100 Nm about the Y axis, 100 Nm about the Z axis. Those are the numbers that matter on a single-carriage mounting, where the load is cantilevered off the carriage face rather than shared between two carriages.

Static Load Rating: 14,500 N against a Dynamic Load Rating of 7,200 N. On a linear guide the static figure is the permissible standing load and the dynamic figure is the reference for travel life, so the static sitting above the dynamic is normal for the type.

Preload class V2 with accuracy class G3 is the combination specified for general machine-tool and automation axes: enough preload for repeatable positioning without the friction penalty of the heavier classes.

Mounting data

Carriage mounting holes: 38 mm apart along the axis, 30 mm across. Fixing screws from above: M5 to DIN ISO 4762-12.9, thread depth 7 mm, maximum tightening torque 5.8 Nm. Fixing screws from below: M4, maximum tightening torque 5 Nm.

Distance from the locating edge on the carriage to the locating edge on the guideway: 16 mm. Free space, system dimension: 4.3 mm. Height of the bearing housing above the carrier: 4.75 mm.

Lubrication: M3 connector, positioned 3.2 mm and 9.1 mm from the datum faces. Maximum tightening torque on the connector: 2 Nm.

Quantity and configuration

Unit Quantity: 1 Pc. One KWVE15-B carriage on one 220 mm profile guideway.

Interchange guidance

KWVE profile rail guides are a Schaeffler design with their own rail profile, ball track geometry and accuracy and preload classes. A size-15 carriage from another maker matches on rail width and system height but not necessarily on raceway profile, so no interchange is claimed here. The figures that decide a substitution are the 15 mm rail width, the 24 mm system height, the 47 mm carriage width and the 38 x 30 mm hole pattern. Designation variants: KWVE 15-B-G3-V2, KWVE15BG3V2, KWVE15-B-G3-V2, KWVE15B.