SEG 25 Metric Series

Two solid section rings separated by a 25mm ball set, with the outer ring being geared. This series has a constant height of 63mm, and a standard range of external diameters ranging from 355mm to 1555mm.

A feature of the SEG 25 series is the high module, wide face gearing making it suitable for high torque applications.

Compared with traditional combination bearing and gearing systems, slewing rings provide a sealed bearing to accommodate axial, radial and moment loads while simultaneously providing a gear for power trasmission as well as bolt holes for fixation.

Key Features

A reduction in the number of design elements
Less component machining
Quick and easy assembly of machinery
Weight savings

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Product Overview

A feature of the SEG 25 series is the high module, wide face gearing making it suitable for high torque applications

All QCB® slewing rings are manufactured to the highest possible quality levels in ISO-certified factories.

A QCB® quality standard defines all aspects of their dimensions and tolerances as well as all aspects of manufacturing, from material properties and all stages of production to packing and labelling.

What are the Typical Uses for Slewing Rings?

Cranes and crane handling systems
Man lifts and access platforms
Bottling and packing line carousels
Robotics and positioning systems
Solar tracking systems
Wind turbines
Winches
Water treatment plants
Machine tools

Dimensions

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QCB reference	Outline dimensions & weight
	D_a	D_i	U	C	U_a	d_i	Load curve	Weight
	mm	mm	mm	mm	mm	mm	Load curve	kg

SEG 600 25 01 AA LM	590.4	355	453	457	455	357	1	74
SEG 700 25 01 AA LM	694.4	455	553	557	555	457	2	93
SEG 800 25 01 AA LM	798.4	555	653	657	655	557	3	111
SEG 900 25 01 AA LM	898	655	753	757	755	657	4	128
SEG 1000 25 01 AA LM	997	755	853	857	855	757	5	145
SEG 1100 25 01 AA LM	1096	855	953	957	955	857	6	155
SEG 1200 25 01 AA LM	1198	955	1053	1057	1055	957	7	171
SEG 1300 25 01 AA LM	1298	1055	1153	1157	1155	1057	8	190
SEG 1400 25 01 AA LM	1398	1155	1253	1257	1255	1157	9	204
SEG 1500 25 01 AA LM	1498	1255	1353	1357	1355	1257	10	222
SEG 1600 25 01 AA LM	1598	1355	1453	1457	1455	1357	11	236

QCB reference	Outer holes		Inner holes		20^o stub gear
	L_a	n_a	L_i	n_i	P	M	z	F_{z MAX}
	mm		mm		mm			KN

SEG 600 25 01 AA LM	516	18	395	18	576	8	72	81
SEG 700 25 01 AA LM	616	20	495	20	680	8	85	81
SEG 800 25 01 AA LM	716	24	595	24	784	8	98	81
SEG 900 25 01 AA LM	816	24	695	24	882	9	98	92
SEG 1000 25 01 AA LM	916	28	795	28	981	9	109	92
SEG 1100 25 01 AA LM	1016	30	895	30	1080	9	120	92
SEG 1200 25 01 AA LM	1116	30	995	30	1180	10	118	105
SEG 1300 25 01 AA LM	1216	36	1095	36	1280	10	128	105
SEG 1400 25 01 AA LM	1316	42	1195	42	1380	10	138	105
SEG 1500 25 01 AA LM	1416	42	1295	42	1480	10	148	105
SEG 1600 25 01 AA LM	1516	48	1395	48	1580	10	158	105

Standard grease fitting	# at least 4x M8 on inner ring

Interchange information

The SEG25 Series is interchangeable with bearings from other manufacturers such as Roth Erde, Torriani Gianni, INA, Schaeffler, SKF, RKS, RIMA, La Leonessa and many more. However there may be variations to this rule (e.g. OEM variants) and we invite you to refer to our technical staff for assistance.

00 Type without pilot diameter

SEG 900 25 00 AA	VSA 25 0755 N
SEG 1000 25 00 AA	VSA 25 0855 N
SEG 1100 25 00 AA	VSA 25 0955 N
SEG 1200 25 00 AA	VSA 25 1055 N
SEG 1300 25 00 AA
SEG 1400 25 00 AA
SEG 1500 25 00 AA
SEG 1600 25 00 AA

01 Type with pilot diameter

SEG 900 25 01 AA	VSA 25 0755 N ZT	E 900 25 00 B	111.25.0755.00.00.10
SEG 1000 25 01 AA	VSA 25 0855 N ZT	E 1000 25 00 B	111.25.0855.00.00.10
SEG 1100 25 01 AA	VSA 25 0955 N ZT	E 1100 25 00 B	111.25.0955.00.00.10
SEG 1200 25 01 AA	VSA 25 1055 N ZT	E 1200 25 00 B	111.25.1055.00.00.10
SEG 1300 25 01 AA			111.25.1155.00.00.10
SEG 1400 25 01 AA			111.25.1255.00.00.10
SEG 1500 25 01 AA			111.25.1355.00.00.10
SEG 1600 25 01 AA			111.25.1455.00.00.10

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Technical

ustom designs

Double drilled or custom drilling patterns
Higher precision bearings with location diameters
Reduced internal clearance (Class 5 & Class 6)
Black oxide or zinc plating for enhanced corrosion protection
Epoxy paint or even Nylon coated units to special order
Stainless steel or aluminium versions

Materials

From 2015 all SEG25 Metric Series slewing rings will be manufactured in 42CrMo4 steel. Smaller units are usually produced in 50Mn / C45.

Internal construction

Standard SEG25 Series bearings incorporate plastic spacers, but ball spacers, steel or brass spacers, or even full complement and caged designs can be supplied for specific applications.

Seals

A land riding NBR (nitrile rubber) seal strip is standard. VITON seals can be supplied to order.

Gearing

The SEG25 Metric series has a standard 20° pressure angle, uncorrected spur gear cut into the outer ring.

Lubrication

QCB^® Slewing rings are assembled with a small quantity of Lithium EP2 grease. It is important that all slewing rings are greased during installation and prior to operation. SEG25 Metric Series slewing rings will usually have 4 or 6 grease nipples DIN 71412 M8x1 on the radial face of the inner ring. Sufficient grease nipples for all holes as well as Nylon plugs (to insert if a grease nipple is not required) are supplied with each ring.

Special greases can be supplied on demand as can GreaseMax Automatic Lubricators and Accessories.

Load & Bolt limit curves

If both a radial and an axial load act on the bearing these must be combines into a single equivalent load to enable basic selection from the load curves. The raceway limit is illustrated by the blue line, the red line illustrates the limit for the specified number of Grade 10.9 bolts.The load point should be well under the relevant load curve for long life.

Grade 8.8 bolts can be used but only after approval by our technical team.

Similarly if the load is suspended or the axis of rotation is not vertical please refer the application details to us and take advantage of our decades of experience!

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Downloads

All QCB^® slewing rings are manufactured to the highest possible quality levels in ISO certified factories. A QCB^® Quality Standard defines all aspects of their dimensions and tolerances as well as all aspects of manufacturing from materials properties, all stages of production, as well as packing and labelling.

Whilst the data on the site is updated regularly, we reserve the right to implement subtle changes to these standards in our quest for continual product improvement.

Applications

Industrial positioners (e.g. welding assemblies and jigs)
Ship or truck loading chutes and swivels
Stretch wrapping machines
Conveyors and other materials handling equipment
Simple amusement rides

Need help?

Our technical team have many years of experience and are happy to assist with selection. Call or e-mail them for fast, efficient and professional advice.

The Design Form will assist you in defining your application details.

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Enquire Now About SEG 25 Metric Series

For any enquiries regarding SEG 25 Metric Series, please complete our enquiry form, and a member of our technical team will respond promptly. Alternatively, you can reach out directly to one of our offices using the contact details here. Our specialists are ready to provide guidance and support tailored to your machinery and engineering needs.