General technical notes and information Ball Rail Systems

Description

• Resist NR:

Product description

Components and their materials

Components and their materials

Ball Rail System with steel Ball Runner Block FNS (components and assembly)

Corrosion protection (optional)1)

• Resist NR:

Ball Runner Block body made of corrosion-resistant steel as per DIN EN 10088

• Resist NR II:

Ball Runner Block body and Ball Guide Rail as well as all steel parts made of corrosion-resistant steel in accordance with DIN EN 10088

• Resist CR:

Ball Runner Block body or ball Guide Rail made of steel with corrosion-resistant coating, matt silver finish, hard chrome plated

1) Type-dependent

Definition of the format of Ball Runner Blocks

Formats: Standard Ball Runner Blocks

Standard Ball Runner Block BSHP with Ball chain up to size 45
FNS R1651 ... 2.	FLS R1653 ... 2.	FKS R1665 ... 2.
SNS R1622 ... 2.	SLS R1623 ... 2.	SKS R1666 ... 2.	SNH R1621 ... 2.	SLH R1624 ... 2.
Standard Ball Runner Block BSHP without Ball chain up to size 45
FNN R1693 ... 1.	FKN R1663 ... 1.	SNN R1694 ... 1.	SKN R1664 ... 1.
Heavy-duty Ball Runner Block BSHP without Ball chain from size 55
FNS R1651 ... 1.	FLS R1653 ... 1.	SNS R1622 ... 1.	SLS R1623 ... 1.
SNH R1621 ... 1.	SLH R1624 ... 1.

Formats: High-speed Ball Runner Block made of steel

FNS R2001 .. 9.	FLS R2002 ... 9.	SNS R2011 ... 9.	SLS R2012 ... 9.

Formats: Super Ball Runner Block, steel

FKS R1661 ... 2.	SKS R1662 ... 2.

Formats: Aluminum Ball Runner Block

FNS R1631 ... 2.	SNS R1632 ... 2.

Formats: Aluminum Ball Runner Block

FNS R1631 ... 2.	SNS R1632 ... 2.

Formats: Ball Runner Block Resist NR II

FNS R2001 ... 0.	FLS R2002 ... 0.	FKS R2000 ... 0.
SNS R2011 ... 0.	SLS R2012 ... 0.	SKS R2010 ... 0.

Formats: Ball Runner Block, Resist CR

Standard Ball Runner Block BSHP with Ball chain up to size 45
FNS R1651 ... 7.	FLS R1653 ... 7.
SNS R1622 ... 7.	SLS R1623 ... 7.	SNH R1621 ... 7.	SLH R1624 ... 7.
Standard Ball Runner Block BSHP without Ball chain up to size 45
FNN R1693 ... 6.	FKN R1663 ... 6.	SNN R1694 ... 6.	SKN R1664 ... 6.
Heavy-duty Ball Runner Block BSHP without Ball chain from size 55
FNS R1651 ... 6.	FLS R1653 ... 6.	SNS R1622 ... 6.	SLS R1623 ... 6.
SNH R1621 ... 6.	SLH R1624 ... 6.
Super Ball Runner Block without ball chain
FKS R1661 ... 7.	SKS R1662 ... 7.

Formats: Wide Ball Runner Block made of steel

BNS R1671 ... 2.	BNS R1671 ... 1.	CNS R1672 ... 2.
Size 20/40 and 25/70	Size 35/90	Size 20/40 and 25/70

Bauformen: Breite Kugelwagen aus Resist CR

BNS R1671 ... 7.	BNS R1671 ... 6.	CNS R1672 ... 7.
Size 20/40 and 25/70	Size 35/90	Size 20/40 and 25/70

Definition of the format of Ball Guide Rails

Formats: Standard Ball Guide Rail made of steel

SNS/SNO with cover strip and strip clamps made of aluminum	SNS/SNO with cover strip and protective caps made of plastic	SNS/SNO with plastic mounting hole plugs	SNS with steel cap
R1605 .3. ../R1605 .B. ..	R1605 .6. ../R1605 .D. ..	R1605 .0. ../R1605 .C. ..	R1606 .5. ..
Without end-face threaded holes (not required)	With threaded holes at the end faces
SNS for mounting from below
R1607 .0. ..

Seals

Seals are use to prevent dirt, chips and coolants, etc. from working their way into the inside of he Ball Runner Block, thereby preventing reductions to its service life. For further information, see "Selection criteria/seals".

Standard seal (SS)

Universal seals are fitted as standard in Rexroth Ball Runner Blocks. They have a uniform sealing effect for Ball Guide Rails with and without cover strips. Low friction and a good sealing effect have both been taken into account in the design. For applications where effective sealing is required.

Low-friction seal (LS)

For special requirements with regard to ease of movement.

Double-lip seal (DS)

For increased exposure to media

Front seal

For applications in environments with fine dirt or metal particles, as well as coolants or cutting fluids.

Interchangeable during servicing.

Front seals are available as accessories for mounting by the customer.

FKM seal

For applications in extreme environments with fine dirt or metal particles, as well as heavy use of coolants or cutting fluids.

Interchangeable during servicing.

FKM front seals are available as accessories for mounting by the customer.

Cover plate wiper

For use in environments with coarse dirt or chips.

Cover plate wiper are available as accessories for mounting by the customer.

Friction

Due to the Rexroth design with four rows of balls, 2-point contact is available in all loading directions. This reduces the friction to a minimum.

Other ball rail systems with two or four rows of balls with 4-point contact have multiple friction: due to the differential slip with lateral loading and in case of comparable prestressing without the load, the gothic raceway profile causes higher friction (depending on the raceway curvature and the load, up to five times the friction coefficient). This high friction leads correspondingly to greater heat.

Ball chain for Ball Runner Block

Ball Runner Blocks with (optional) ball chains have an optimized noise level.

Formats: Ball Runner Block, Resist NR

FNS R2001 ... 3.	FLS R2002 ... 3.	FKS R2000 ... 3.
SNS R2011 ... 3.	SLS R2012 ... 3.	SKS R2010 ... 3.

Formats: Wide Ball Guide Rail made of steel

BNS with plastic mounting hole plugs	BNS with steel caps	BNS for mounting from below
R1676 .0. ..	R1676 .5. ..	R1677. .0. ..

Technical data

General Notes

The general technical data and calculations apply to all Ball Rail Systems i.e. to all Ball Runner Blocks and Ball Guide Rails. Specific technical data relating to the individual Ball Runner Blocks and Ball Guide Rails is listed separately.

Preload classes

To cover the widest possible range of applications, Rexroth Ball Runner Blocks are available in different preload classes.

The following preload classes are available:

• Ball Runner Block without preload (preload class C0)

• Ball Runner Blocks with moderate preload (preload class C1)

• Ball Runner Blocks with average preload (preload class C2)

• Ball Runner Blocks with high preload (preload class C3)

To prevent reductions to the service life, the preload should not exceed 1/3 of the load on bearing F.

In general, the rigidity of the Ball Runner Block rises with increasing preload. If vibrations occur, select a correspondingly high preload (≥ preload class C2).

Guide systems with parallel rails

When choosing the preload class, pay attention to permissible parallelism offset of rails too ("Accuracy class selection criterion").

When specifying ball rail systems of accuracy class N, we recommend preload class C0 or C1 to avoid distortive stress due to the tolerances.

Fields of application

Project planning information

Mounting

Maintenance

Certification

Safety Instructions

Downloads

	Profiled rail systems Manual | R320103885_EN | 2016-09-01 | English | PDF | 11.5MB Product Groups: Linear guides
	Catalog BSHP Ball Rail Systems Catalog | R999000485 | 2020-10-01 | English | PDF | 15MB Product Groups: Ball Rail Systems only available as PDF