Guide rail types mainly differ in their mounting method, which also determines the closure options for fixing holes. In addition, there are different fixing hole spacings and hardness characteristics. This chapter provides an overview of MONORAIL MR roller and MONORAIL BM/BZ ball types, as well as detailed criteria for guide rail selection.

4.3.1 Guide Rail Types Overview

Guide rail types mainly differ in their mounting method, which also determines the closure options for fixing holes. In addition, there are different fixing hole spacings and hardness characteristics. The following table provides an overview of MONORAIL MR roller and MONORAIL BM/BZ ball types. For available sizes, please refer to the SCHNEEBERGER MONORAIL and AMS product catalog.

MR Guide Rail Product Overview

MR guide rail types diagram
Size / Guide Rail Type
N
Standard
ND
Standard
Fully hardened
NU
Bottom mounting
NUD
Bottom mounting
Fully hardened
C
Cover strip
CD
Cover strip
Fully hardened
Size 25 MR S 25-N MR S 25-ND MR S 25-NU MR S 25-C MR S 25-CD
Size 35 MR S 35-N MR S 35-ND MR S 35-NU MR S 35-NUD MR S 35-C
Size 45 MR S 45-N MR S 45-ND MR S 45-NU MR S 45-C
Size 55 MR S 55-N MR S 55-NU MR S 55-C
Size 65 MR S 65-N MR S 65-NU MR S 65-C
Size 100 MR S 100-N
Special Characteristics
Fixing from above
Fixing from below
Minimum assembly work
Large monolithic system length
For chip environment
For supporting cover strips

BM Guide Rail Product Overview

BM guide rail types diagram
Size / Guide Rail Type
N
Standard
ND
Standard
Fully hardened
NXD
Standard
Half hole spacing
Fully hardened
NU
Bottom mounting
C
Cover strip
CD
Cover strip
Fully hardened
Size 15 BM S 15-ND BM S 15-NXD BM S 15-CD
Size 20 BM S 20-N BM S 20-NU BM S 20-C
Size 25 BM S 25-N BM S 25-NU BM S 25-C
Size 30 BM S 30-N BM S 30-NU BM S 30-C
Size 35 BM S 35-N BM S 35-NU BM S 35-C
Size 45 BM S 45-N BM S 45-NU BM S 45-C
Special Characteristics
Fixing from above
Fixing from below
Minimum assembly work
High precision mounting
without lateral datum surface
Large monolithic system length
For supporting cover strips

Legend

  • N: Standard guide rail
  • D: Fully hardened/densified version
  • U: With bottom mounting capability
  • C: Cover strip version
  • ●: This model has this characteristic

4.3.2 Guide Rail Selection Criteria

Mounting Method

There are two main mounting methods for guide rails. Standard guide rails -N- and cover strip guide rails -C- have continuous fixing holes for mounting from above. N-type guide rail fixing holes can be closed with plastic plugs, brass plugs or steel plugs.

There are also guide rails with threaded fixing holes on the bottom for mounting from below. These guide rails are marked with the -NU- suffix.

The -D- suffix in the model description indicates fully hardened guide rails, -X- indicates rack guide rails for ball bearings (BZ).

Guide rail mounting method diagram
Standard Guide Rails Special Guide Rails
Model/Mounting Method N, ND C, CD NU, NUD NX (BZ)
Fixing from above
Fixing from below
Fixing from side

Note: ● = Applicable

Side mounting represents the fourth variant. This is used for the MONORAIL BZ rack system. In this case, the fixing holes are outside the carriage travel range, and the advantage is that the fixing holes are very easy to access and the bolts can be protected from contamination.

Guide Rail Covers

Depending on the guide rail type, the guide rail fixing holes can be closed in different ways. For this purpose, SCHNEEBERGER offers various elements for each specific application.

Guide rail cover types

U-Type Rail

Mounting from below, no guide rail cover needed

  • Cost: Low
  • Installation: Simple

Plastic Plugs

Economical closure solution

  • Cost: Low
  • Installation: Simple
  • Suitable for: Liquids, dust, chips, hot particles

Brass Plugs

Medium cost reliable solution

  • Cost: Low
  • Installation: Medium
  • Removal: Very convenient
  • Suitable for: Liquids, dust, chips

Steel Plugs

High mechanical load capacity solution

  • Cost: Medium
  • Installation: Complex
  • Removal: Good
  • Suitable for: Liquids, dust, chips, hot particles

Cover Strips

Premium closure solution

  • Cost: High
  • Installation: Simple
  • Reusable
  • Requires guide rail end space
  • Suitable for: Dust, hot particles

Selection Recommendation

When selecting guide rail covers, consider the application environment (liquids, dust, chips, etc.), cost budget, installation convenience and maintenance requirements. For detailed cover selection criteria, please refer to the product catalog or consult the SCHNEEBERGER technical team.

連結已複製!