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
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| Design Features |
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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.
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| Maintenance |
 Standard
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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).
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 Low Maintenaince
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| 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. |
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| 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.
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Ball bearing turntables and slewing rings
Ball bearing turntables KLK HE and SO
Included in supply
standard / low-maintenance
drilled / undrilled
primed
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| Technical Specifications |

KLK HE Standard

KLK SO Standard

KLK HE Low Maintenance

KLK SO Low Maintenance
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= 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%.
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| 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 |
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| 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.
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