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GN 509 Ball Transfer Units Steel / Stainless Steel

Ball Transfer Units GN 509: Steel / Stainless Steel
Material: SBL - Steel sheet
Stainless-Steel

Product Family Stainless Steel

Standard parts made of rustproof stainless steel have been designed for use in the food sector, in the chemical industry, for aggressive ambient conditions or for outdoor use.

  • corrosion-resistant
  • precise fit
  • environmentally friendly
Show all Stainless Steel products
More Information on Ball Transfer Units Plastic Characteristics Stainless Steel Characteristics

Product description

Ball transfer units GN 509 are typically used on conveyor tracks. They enable an effortless movement or rotation of even heavy loads in any direction.

The diameter d2 features a taper in the upper area, beneath the flange, which allows it to be easily and firmly installed.

Specification

  • Housing
    Steel sheetSBL
    Zinc plated, blue passivated finish
    \
  • Ball
    Steel, plain finish
  • Housing
    Steel sheetSKU
    Zinc plated, blue passivated finish
    \
  • Ball
    Plastic (Polyacetal POM)
  • Housing
    Steel sheetSNI
    Zinc plated, blue passivated finish
    \
  • Ball
    Stainless steel AISI 420C
  • Housing
    Stainless steel sheetNNI AISI 304
    \
  • Ball
    Stainless steel AISI 420C

RoHS

Accessory

Spring Retainers GN 509.3 (Mounting elements for ball transfer units)

GN 509 Steel / Stainless Steel Ball Transfer Units sketch
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GN 509 Steel / Stainless Steel Ball Transfer Units sketch

Part Options / Table
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Metric

Dimensions in: Inch (change to Metric)
Sized1
Ball		d2d3h1 ±0.012h2 ±0.012h3 ±0.012h4Load rating C
Version
SBL

SKU

SNI

NNI
150.620.9451.220.4530.3740.1970.11112 lbf (500 N)15.74 lbf (70 N)67.44 lbf (300 N)67.44 lbf (300 N)
220.871.4171.770.7760.3860.2360.11270 lbf (1200 N)22.48 lbf (100 N)202 lbf (900 N)202 lbf (900 N)
30*1.191.7722.170.9450.5430.2760.15450 lbf (2000 N)33.72 lbf (150 N)337 lbf (1500 N)-
* Not available in version NNI

Build & Price
Size
Material




Size
Material




Arrangement and Size Selection

When determining the size of the ball transfer units, it is necessary to consider not only the weight but also the size and nature of the base area of the load.

The maximum distance between the ball transfer units „a2“ (assuming a flat base area) is calculated by dividing the shortest edge length of the load by 2.5. This ensures that the load always rests on the ball transfer units, preventing it from tipping over into the spaces between them.

The required load capacity of the ball transfer units is calculated by dividing the weight of the load by 3. This results from the assumption that, due to tolerances of the load base area and the ball transfer units, only three ball transfer units are normally used.
Sketch GN 509

a1 = Shortest edge length of the load

a2 = Max. distance between ball transfer units

a2 = a1/2.5

F1 = Load weight

F2 = Load per ball transfer unit

F2 = F1/3

Speed and Friction

The permissible conveying speed is up to 2 m / sec. With larger ball transfer units at speeds exceeding 1 m / sec., depending on the load weight, an increase in temperature must be expected.

The friction values of the ball transfer units are about 0.005 µ at a speed of 1 m / sec. However, this value is subject to large variations depending on the operating conditions.

Compared to ball transfer units with steel sheet housing (GN 509), those with solid steel housing (GN 509.1) have a higher rigidity. In this case, the static values of steel balls can be applied.

Lubrication is recommended as protection against corrosion. The general rolling bearing regulations can be applied. In most applications, lubrication can be dispensed with.

Temperature Resistance

Ball transfer units from size 36 upwards are fitted with a felt seal as protection against ingress of dust and dirt. With this version, the max. operating temperature is 212 °F (100 °C) for balls made of steel.

Ball transfer units without felt seal can also be used at higher temperatures. However, this will lead to a reduced load rating (C). The following guide values apply:

257 °F (125 °C) ./. 10 %
302 °F (150 °C) ./. 20 %
338 °F (170 °C) ./. 30 %
392 °F (200 °C) ./. 50 %

The max. operating temperature for ball transfer units with plastic ball is 140 °F (60 °C).

Selected Part

Total (net)
US$10.57
In Stock: 32
In Stock
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Please note our quantity discounts (US Dollars).
MinMaxPrice
149US$10.57
5099US$9.69
100249US$8.81
≥ 250US$7.93
Prop 65: Not compliant
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
RoHS: Compliant
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Weight: 0.089 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351

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Need Help?

Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time: 800-877-8351

Special Requests | Contact our sales team

GN 509-15-SBLGN 509-15-SNIGN 509-15-NNIGN 509-15-SKUGN 509-22-SBLGN 509-22-SNIGN 509-22-NNIGN 509-22-SKUGN 509-30-SBLGN 509-30-SNIGN 509-30-SKU

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Important: Pricing

Attention Valued Customer,
 
Beginning February 16, 2026, we will implement a price adjustment. Some items will have a price decrease, while others will increase. The adjustment helps ensure our commitment to providing our customers with the best products and services.
 
We will honor current published prices through February 15, 2026.

Customers with pricing agreements will not be effected until annual pricing is reviewed.