YAT-207-107 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-28

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the YAT-207-107 model number is decoded

The YAR2 series order number YAT 207-107 is a SKF insert bearing (Y-bearing) for a 36.512499999999996 mm (1.438 in) shaft: grub-screw insert bearing with the inner ring extended on one side, built to the ISO 15 diameter-series envelope with a sphered OD of 72 mm. Inside is a sealed deep-groove ball set with an extended inner ring, two set screws 120 deg apart doing the shaft locking, and the sphered outer ring providing the unit's static alignment pivot. reading the YAT basic designation: set-screw shaft locking with the screws spaced 120 deg apart; YAT carries the one-side-extended inner ring. inch bore code -107 decodes as 1" +7/16, i.e. 36.512 mm; the metric coded size YAT 207 shares the same envelope but its bore is the metric value, not this one. with no -2F/-2RF suffix the order number denotes the open external execution of the YAR2 size — add external exclusion at the housing and plan relubrication intervals for dusty or wet surroundings. Envelope 36.512499999999996x72x33 mm (1.438x2.835x1.299 in), outer ring 19 mm wide, C 25.5 kN, C0 15.3 kN, Pu 0.655 kN. The catalogue publishes a single speed ceiling, the limiting speed: 5,300 r/min; mass 360 g. Pitch-diameter arithmetic: dm = (36.512499999999996+72)/2 = 54.256 mm; at the 5,300 r/min limiting speed the ball set runs at dn approx 2.88x10^5, reduced from an open bearing mainly by seal lip friction and the life-long grease fill. Width accounting on this execution: 33 mm overall and 19 mm outer-ring width leave the housing designer 14 mm of inner-ring projection to accommodate the locking arrangement. Envelope arithmetic: the radial section from 36.512499999999996 mm bore to 72 mm OD is 17.744 mm; dividing C 25.5 kN by that section gives 1.437 kN per section millimetre, and the 33 mm overall width is 1.86x the section. Mass-to-load ratio for YAT-207-107: 14.118 g of catalogue mass per rated kN of C, and 9.86 g per millimetre of bore — useful when comparing executions of the same 36.512499999999996x72 mm envelope on the drawing. At the printed limiting speed of 5,300 r/min the mean diameter dm = 54.256 mm implies dn about 2.88x10^5 mm.r/min — the speed-demand figure used when comparing this insert with open deep-groove sizes of the same bore. Single-extension fitting note: with the inner ring extended only on the locking side, orient the open (non-extended) face toward the shaft step or housing shoulder as the drawing shows — reversed, the set screws end up unsupported by the abutment and the shortened side offers no seal land at all. Service tip for YAT-207-107: dimpled or drilled shaft spots under the screw points are sometimes specified on shock duty, but the standard mounting relies on point indentation alone — never substitute longer screws that reach the 17.744 mm radial section.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• The 23.3 mm s1 dimension is the screw seating geometry inside the 14 mm of extended inner ring; a shaft step that crowds that side prevents the screws reaching the shaft squarely.
• Replacement discipline: a one-side YAT insert is not interchangeable with an eccentric-collar unit of the same envelope — the shaft may need spot-facing or collar space that does not exist.
• Do not specify the 36.512499999999996 mm grub-screw insert for a shaft harder than about 45 HRC without dimples: the screw points skate on hard surfaces and the unit creeps regardless of tightening torque.
• The 25.5/15.3 kN figures belong specifically to YAT 207-107; HV stainless, AG agricultural and VE495 zinc-plated variants of the same envelope publish derated values, so write the complete order number including suffixes on the purchase and maintenance records.