RexrothBall Guide Rail, Size 30 SNS, Carbon Steel, Normal Accuracy Class, Top-Mounting with Plastic Hole Plugs — Rail Only

Product Description

What this part is

A Bosch Rexroth Ball Rail guide rail, size 30, SNS series, in carbon steel. Brand: Bosch Rexroth. Part Number: R160780431. Order Code: KSA-030-SNS-N-MA-AK. System: Rexroth Ball Rail System, SNS series. Size: 30. Material: Carbon Steel. Accuracy Class: N (Normal). Mounting: MA, from above, counterbored for cap screws. Hole Plugs: AK plastic plugs. Mass: approximately 5 kg per metre. Permissible Ambient Temperature: 0 °C to +80 °C. Design Units: Metric. Housing Style: profiled linear guide rail, four raceways.

Decoding the order code

KSA: Ball Rail guide rail. 030: size 30, the rail width designation in the Rexroth Ball Rail System. SNS: the standard-width, four-raceway Rexroth ball rail profile. N: Normal accuracy class. MA: mounting from above, counterbored for cap screws driven down through the rail into the machine bed. AK: plastic mounting-hole plugs, pressed into the counterbores to keep chips and coolant out of the ball track.

What these specs mean in practice

Size 30 SNS is one of the most widely used Rexroth rail sizes in machine tools, gantries and automation cells. SNS is a system standard, so any Rexroth size 30 SNS runner block runs on this rail across block lengths, heights and preload classes. Accuracy class N is the general-purpose grade for handling, gantries, packaging and machining fixtures; H, P and SP hold tighter parallelism and height tolerance for grinding and measuring axes. Carbon steel is Rexroth’s standard rail material and carries the majority of installed size 30 SNS axes; the corrosion-resistant execution suits wash-down and wet-process axes.

Quantity and configuration

Guide rail only. Unit Quantity: 1 Pc. Accepts any Rexroth size 30 SNS Ball Rail runner block.

Interchange guidance

Rexroth Ball Rail SNS is a system-specific profile: the raceway geometry and the rail width across raceways are proprietary to the Rexroth Ball Rail System, so blocks are matched within the system. Within Rexroth, this rail carries size 30 SNS runner blocks including the KWD-030, KWE-030 and SLS/SNS 30 families in flanged and narrow forms, and earlier Star Linear size 30 SNS parts. Cross-listings for the same rail: R160780431, R-160-780-431, R1607 804 31, KSA-030-SNS-N-MA-AK, KSA030SNSNMAAK. Adjacent order codes: R160570431 is the same rail family in another length, and KSA-030-SNS-P-MA-AK is the P accuracy class in the same envelope.