Ball bearing turntables and slewing rings

Ball bearing turntables and slewing rings are parts for fitting onto trailers and agricultural vehicles to connect the A-frame to the trailer chassis so it can swivel.
Ball bearing turntables and slewing rings must always be operated as set out in the relevant operating instructions for the particular vehicle.
Compliance with ”TÜV” Safety Regulations and Motor Vehicle Safety Standards (StVZO) is required in Germany.
JOST ball bearing turntables and slewing rings cover the complete spectrum of trailer technology and have a solution to suit all applications KZ 1108-1112
KZ 1116, KZ 1120

Design Features
Turntable,
drilled / undrilled
Slewing ring,
undrilled


The ball bearing turntables and slewing rings allow the bogie to turn relative to the trailer frame. They transfer both the axial force and the thrust and tensile forces that occur during a journey.



The lower ring/outer ring is bolted on to the A-frame and the upper ring/inner ring is bolted to the chassis. The A-frame, ball bearing turntable or slewing ring and chassis must never be welded together. Pre-welded stop blocks relieve the shear load on the bolts resulting from horizontal forces.

The ring must be mounted on a completely flat and rigid base with at least 50 % of the circumference adequately supported.



Ball bearing turntables are available in drilled and undrilled versions. Slewing rings are available in undrilled versions only.

Maintenance

Standard

JOST standard ball bearing turntables are supplied with a thin base coating of lubricant. Before it is used for the first time the ball bearing turntable must be lubricated thoroughly. See JOST installation and operating instructions. Connection to the central vehicle lubrication system is possible (grease is essential, rather than oil).


Low Maintenaince

The low-maintenance versions of ball bearing turntables and slewing rings mean they do not have to be maintained for up to three years or 300,000 km. After this period they must be serviced in the same way as standard turntables. The lowmaintenance models are distinguished by a green type plate and by the letter “W” at the end of the item number. Maintenance conditions differ when fitted to steered semi-trailers or in the case of heavy conditions of use.


Axial Load


The range of applications for ball bearing turntables and slewing rings depends on the maximum axle load. JOST ball bearing turntables and slewing rings cover an axle load range from 7.5 to 250 kN.

The specified axle loads for series KDL, HE, SO and ND relate to use where the slewing ring is mounted on the front axle of a trailer with three axles and fifth wheel steering, travelling at speeds of up to 100 kph (65 mph). On dual-axle trailers, the specified axle loads can be exceeded by 10% or 20% at speeds below 30 kph (18 mph).

All load data for series KDL, HE, SO, ND, L and N apply to use on roads in fifth wheel steering systems and for paved standard road conditions in Central Europe.

If the ball bearing turntable and slewing ring are to be mounted above the steered axle and above the king pin on semi-trailers, please ask JOST for the load data, giving details of the vehicle. Any deviations are given on the specification sheet.

Ball bearing turntables and slewing rings
Ball bearing turntables KLK HE and SO

Included in supply
  • standard / low-maintenance
  • drilled / undrilled
  • primed
  • Technical Specifications

    KLK HE
    Standard



    KLK SO
    Standard



    KLK HE
    Low Maintenance



    KLK SO
    Low Maintenance


    = Shaped Profile






    Order No. Permitted
    axial load
    (kN)
    Dimensions (mm) Kg
    (approx)
    Maint-
    enance
    Drill
    template
    no.
    A B C D E F d G H
    KLK HE 4 30 685 700 588 567 657 671 - 9 80 32 Standard Undrilled
    KLK HE 5 50 880 895 783 762 852 866 16 9 80 43 Standard 2
    KLK HE 6-1000 60 1000 1015 903 882 972 986 - 9 80 48 Standard Undrilled
    KLK HE 6 65 1090 1105 993 972 1060 1074 18 9 80 52 Standard 1
    KLK HE 12-1000 70 1000 1011 886 859 960 974 - 10 90 63 Standard Undrilled
    KLK HE 12-1000 W 70 1000 1008 877 846 960 974 - 10 90 65 Low Undrilled
    KLK HE 12 80 1100 1111 986 959 1060 1074 18 10 90 69 Standard 1
    KLK HE 12 W 80 1100 1108 977 946 1060 1074 18 10 90 72 Low 1
    KLK HE 18-1000 80 1000 1011 886 859 960 974 - 10 90 63 Standard Undrilled
    KLK HE 18-1000 W 80 1000 1008 877 846 960 974 - 10 90 65 Low Undrilled
    KLK HE 18 100 1100 1111 986 959 1060 1074 18 10 90 69 Standard 1
    KLK HE 18 W 100 1100 1108 977 946 1060 1074 18 10 90 72 Low 1
    KLK HE 1000-22 100 1000 1011 886 859 960 974 - 10 90 63 Standard Undrilled
    KLK HE 1000-22 W 100 1000 1008 877 846 960 974 - 10 90 65 Low Undrilled
    KLK HE 1100-22 120 1100 1111 986 959 1060 1074 18 10 90 69 Standard 1
    KLK HE 1100-22 W 120 1100 1108 977 946 1060 1074 18 10 90 72 Low 1
    KLK SO 1100-24 120 987 1000 871 844 952 966 - 10 90 72 Standard Undrilled
    KLK SO 1000-24 W 120 987 1000 871 844 952 966 - 10 90 73 Low Undrilled
    KLK HE 1200-22 130 1200 1211 1086 1059 1160 1174 18 10 90 76 Standard 1
    KLK HE 1200-22 W 130 1200 1208 1077 1046 1160 1174 18 10 90 80 Low 1
    KLK HE 1300-22 140 1300 1311 1186 1159 1260 1274 - 10 90 84 Standard Undrilled
    KLK HE 1300-22 W 140 1300 1308 1177 1146 1260 1274 - 10 90 89 Low Undrilled
    KLK SO 1100-24 160 1095 1108 979 952 1060 1074 18 10 90 82 Standard 1
    KLK SO 1100-24 W 160 1095 1108 979 952 1060 1074 18 10 90 83 Low 1


    Slewing Ring
    KDL 900
    Included in supply
  • low-maintenance
  • undrilled
  • hardened bearings
  • primed


  • Technical Specifications

    = Shaped Profile


    Order No. Permitted
    axial load
    (kN)
    Dimensions (mm) Kg
    (approx)
    A B C D E F G H
    KDL 900-1 W 40 520 409 412 302 490 332 371 451 25
    KDL 900-2 W 80 650 539 542 432 620 462 501 581 32
    KDL 900-3 W 120 750 639 642 532 720 562 601 681 39
    KDL 900-4 W 150 850 739 742 632 820 662 701 781 45
    KDL 900-5 W 180 950 839 842 732 920 762 801 881 51
    KDL 900-6 W 210 1050 939 942 832 1020 862 901 981 57
    KDL 900-7 W 250 1200 1089 1092 982 1170 1012 1051 1131 67
    Ball bearing turntables
    KLK L and N
    Included in supply
  • standard
  • undrilled
  • primed


  • Technical Specifications


    Scope

    Application Speed Farm Vehicle
    Farm vehicle up to 30 km / h L
    Transport equipment up to 30 km / h L
    Farm vehicle, heavy up to 30 km / h N
    Truck trailer, light up to 30 km / h N
    At a speed of less than 30 kph the maximum axial load for the N series can be increased by 30 to 50%.

    Selection table / Versions available
    Order No. Permitted
    axial load
    (kN)
    Dimensions (mm) Kg
    (approx)
    A B C D E F H
    KLK 400L 7.5 400 342 292 230 375 260 45 11
    KLK 500L 9 500 442 392 330 475 360 45 15
    KLK 650L 15 650 592 542 480 625 510 45 20
    KLK 750L 18 750 692 642 580 725 610 45 23
    KLK 850L 25 850 792 742 680 825 710 45 27
    KLK 950L 30 950 892 842 780 925 810 45 30
    KLK 1050L 35 1050 992 942 880 1025 910 45 34
    KLK 500N 18 500 437 384 315 475 340 52 17
    KLK 650N 25 650 587 534 465 625 490 52 23
    KLK 650N 25 650 587 534 465 625 490 52 23
    KLK 750N 30 750 687 634 565 725 590 52 28
    KLK 850N 35 850 787 734 665 825 690 52 32
    KLK 950N 40 950 887 834 765 925 790 52 36
    KLK 1050N 45 1050 987 934 865 1025 890 52 40


    Ball bearing turntables
    KLK ND
    Included in supply
  • standard
  • drilled
  • primed


  • Technical Specifications



    Selection table / Versions available
    Order No. Permitted
    axial load
    (kN)
    Dimensions (mm) Kg
    (approx)
    A B C D E F
    KLK 950 ND 60 952 885 821 750 920 780 52
    KLK 1100 ND 70 1102 1027 963 890 1070 920 61


    General information


    Order information
    Available ball bearing turntables and slewing ring series are specified in the respective selection tables by means of an order reference number.

    Scope of supply, storage, transport and handling
    Included in the supply are the ball bearing turntable or slewing ring according to the order reference number and the technical documentation requested according to the order form. If you do not intend to unpack and fit the ball bearing turntables and/or slewing rings immediately on delivery, please store them in a dry place.
    The maximum storage period for maintenance-free ball bearing turntables and slewing rings is three years. Ball bearing turntables and slewing rings are transported on Euro pallets.

    Further documentation
    You can find further technical details and information (e.g. mounting and operating instructions) at www.jost-world.com.

    Terms of guarantee

    Guarantee
    JOST guarantees perfect dimensional and material condition, as well as the correct functioning of the ball bearing turntables and slewing rings for a period of three years or 300,000 km, whichever arises first.
    Different guarantee terms apply if they are installed in forced steering semi-trailers.

    Claims under guarantee
    Requirements for claims under guarantee are:
    • Observance of the specifications in the technical data sheetissued by JOST, proof of correct storage and compliance with our fitting and servicing instructions.
    • Immediate communication of your claim and, where necessary, the return of the faulty products to JOST.
    • The immediate and full completion of the technical questionnaire supplied by JOST.
    • Providing an opportunity to investigate the problem and/or carry our tests on site, as well as measures to reduce damage at the discretion of JOST.